Academic article

• Kjetil Søreide; Dyre Kleive; Linn Såve Nymo et al. (2026). Comparing Open and Laparoscopic Left-Sided Pancreatic Resection at a National Level: An IDEAL IV Study on Implementation, Population-Adjusted Resection Rate, and Achieved Ideal Outcomes. (external link)
• Marcus Thomas Thor Roalsø; Celine Oanæs; Herish Garresori et al. (2026). Combined Impact of Neoadjuvant Therapy and Preoperative Cachexia in Patients Undergoing Pancreatoduodenectomy: Is There a “Double Jeopardy”? A National Cohort Study Investigating the Association with Short- and Long-Term Outcomes. (external link)
• Arezo Kanani; Marina Alexeeva; Rufus Vinod et al. (2026). Pre- and postoperative expression of circulating CEACAM1 and CEACAM6 using a nanoparticle-supported, lectin-specific assay detected in serum from patients with colorectal cancer. (external link)
• Julie Hallet; Massimo Falconi; Sean Bennet et al. (2026). Surgical management of small intestinal neuroendocrine tumours. (external link)
• Torhild Veen; Arezo Kanani; Andreas B. Alvestad et al. (2026). Rectal cancer with synchronous liver metastasis undergoing hepatectomy: sequencing to the ‘liver-first’ reflects tumour burden of the primary. (external link)
• Annbjørg H. Søreide; Karin Hestnes Edland; Andreas B. Alvestad et al. (2026). Malpractice claims for pancreatic cancer in Norway: claim-rates, injury domains, claim outcomes and indemnity compensation. (external link)
• Kjetil Søreide; Kim Waardal; Dyre Kleive (2026). Pancreatoduodenectomy with vascular resection in a population-derived cohort: time-trends, effect on short-term composite outcome and relevance for overall survival. (external link)
• Benedicte Skjold-Ødegaard; Robbert-Jan Sjoerd Lindeman; Kjetil Søreide et al. (2026). Approaches to Education and Training on How to Diagnose and Treat Acute Appendicitis in Norway: A Mixed-Method Study. (external link)
• Johannes Wiik Larsen; Kjetil Søreide; Jon Arne Søreide et al. (2026). Epidemiological trends in abdominal trauma in Norway (2015–2023): a national register-based cohort study of severity, population-adjusted incidence, and short-term outcomes. (external link)
• James Lucocq; James Halle-Smith; Beate Haugk et al. (2025). Long-term Outcomes Following Resection of Adenocarcinoma Arising from Intraductal Papillary Mucinous Neoplasm (A-IPMN) Versus Pancreatic Ductal Adenocarcinoma (PDAC): A Propensity-score Matched Analysis. (external link)
• Marcus Thomas Thor Roalsø; James Lucocq; Sanjay Pandanaboyana et al. (2025). Surgery for metastasis to the pancreas: systematic review of observational cohort studies. (external link)
• Jannicke Horjen Møller; Kjetil Søreide; Eirik Alnes Buanes et al. (2025). Incidence, Mortality, and Long-Term Survival in Patients With Acute Pancreatitis Admitted to Intensive Care: A Nationwide Cohort Study. (external link)
• Kjetil Søreide; Torhild Veen; Elen Martine Hauge et al. (2025). The gender gap between female medical students and recruitment to surgical training in Norway: A cross-sectional, nationwide cohort study of medical students, surgical trainees, and specialists. (external link)
• Torhild Veen; Dordi Lea; Marcus Thomas Thor Roalsø et al. (2025). Repeat hepatectomy for colorectal liver metastasis with rates of second and third hepatectomy: time-to-recurrence and overall survival in a population-derived cohort. (external link)
• Kjetil Søreide; Elen Martine Hauge; Cecilie Fredvik Torkildsen et al. (2025). Time-trend analysis of female rates among certified surgeon specialists across 10 surgical specialties in Norway. (external link)
• Kjetil Søreide; Jannicke Horjen Møller; Kristian Strand et al. (2025). Malpractice and compensation claims for acute pancreatitis in Norway: characteristics of claimants, claim-rates, outcomes and indemnity compensation. (external link)
• Eva Maier; Stefan Stättner; Lucia Carrion-Alvarez et al. (2025). The E-AHPBA-ESSO-Innsbruck consensus recommendations on peri- and postoperative management following liver resection. (external link)
• Marcus Thomas Thor Roalsø; Linn Såve Nymo; Dyre Kleive et al. (2025). Sex Disparity and Procedure-Related Differences in Achieving an Ideal Outcome after Pancreatic Surgery: A National Observational Cohort Study. (external link)
• Marcus Thomas Thor Roalsø; Linn Såve Nymo; Dyre Kleive et al. (2025). Pancreatectomy in a national universal healthcare system: sex- and age-adjusted resection rates across four health regions related to a composite ideal outcome. (external link)
• Benedicte Skjold-Ødegaard; Geir Sverre Braut; Hege Langli Ersdal et al. (2025). Claims filed after perceived malpractice in management of acute appendicitis: An observational nationwide cohort study. (external link)
• Laura Lorenzon; Rebecca C. Grossman; Kjetil Søreide (2020). Impact of randomized controlled trials in the social media: Does science trend as much as everyday events?. (external link)
• Kjetil Søreide; Jan Hallvard Træland; Pål Johan Stokkeland et al. (2012). Adherence to national guidelines for surveillance after curative resection of nonmetastatic colon and rectum cancer: a survey among Norwegian gastrointestinal surgeons. (external link)
• Kjetil Søreide; Frank Olsen; Linn Såve Nymo et al. (2018). A nationwide cohort study of resection rates and short-term outcomes in open and laparoscopic distal pancreatectomy. (external link)
• Federico Coccolini; Yoram Kluger; Ernest E. Moore et al. (2021). Trauma quality indicators: internationally approved core factors for trauma management quality evaluation. (external link)
• Justine I Davies; Adrian W. Gelb; Julian Gore-Booth et al. (2021). Global surgery, obstetric, and anaesthesia indicator definitions and reporting: An Utstein consensus report. (external link)
• James Lucocq; Kjetil Søreide; Sanjay Pandanaboyana (2024). ASO Author Reflections: Response to Chemotherapy Differs between Precursor Epithelial Subtypes of Pancreatic Adenocarcinoma Arising from Intraductal Papillary Mucinous Neoplasms and may Warrant Tailored Treatment to Improve Outcomes. (external link)
• Hartwig Kørner; Marianne Guren; Inger Kristin Larsen et al. (2022). Characteristics and fate of patients with rectal cancer not entering a curative-intent treatment pathway: A complete nationwide registry cohort of 3,304 patients. (external link)
• Knut Harboe; Christian Lycke Ellingsen; Einar Sudmann et al. (2015). Can bone apposition predict the retention force of a femoral stem? An experimental weight-bearing hip-implant model in goats.. (external link)
• Tom Birger Glomsaker; Geir Hoff; Jan Terje Kvaløy et al. (2013). Patient-reported outcome measures after endoscopic retrograde cholangiopancreatography: a prospective, multicentre study. (external link)
• James Lucocq; Jake Hawkyard; Francis P. Robertson et al. (2024). Risk of Recurrence After Surgical Resection for Adenocarcinoma Arising From Intraductal Papillary Mucinous Neoplasia (IPMN) With Patterns of Distribution and Treatment: An International, Multicenter, Observational Study (ADENO-IPMN Study). (external link)
• Arezo Kanani; Torhild Veen; Dordi Lea et al. (2024). Neoadjuvant Immunotherapy Followed by Surgery Compared with Upfront Surgery Alone in Operable Colon Cancer with Deficient Mismatch Repair: Modeling Oncological Outcomes and Numbers Needed to Treat. (external link)
• Clemens Weber; Joakim Stray Andreassen; Siobhan Isles et al. (2022). Incidence, Mechanisms of Injury and Mortality of Severe Traumatic Brain Injury: An Observational Population-Based Cohort Study from New Zealand and Norway. (external link)
• Johannes Wiik Larsen; Kenneth Thorsen; Knut Olav Lende Sandve et al. (2020). Incidence and characteristics of pancreatic injuries among trauma patients admitted to a Norwegian trauma centre: a population-based cohort study. (external link)
• Jon Arne Søreide; Oddvar Mathias Sandvik; Kjetil Søreide (2016). Improving pancreas surgery over time: Performance factors related to transition of care and patient volume. (external link)
• Kjetil Søreide; Florian Primavesi; Knut Jørgen Labori et al. (2019). Molecular biology in pancreatic ductal adenocarcinoma: implications for future diagnostics and therapy. (external link)
• Aneel Bhangu; Kjetil Søreide; Salomone Di Saverio et al. (2015). Acute appendicitis: Modern understanding of pathogenesis, diagnosis, and management. (external link)
• Kjetil Søreide; Graham Mackenzie; Karol Polom et al. (2019). Tweeting the meeting: Quantitative and qualitative twitter activity during the 38th ESSO conference. (external link)
• Benedicte Skjold-Ødegaard; Sehrish Hamid; Robbert-Jan Sjoerd Lindeman et al. (2021). Deciphering the inflection points to achieve proficiency for each procedure step during training in laparoscopic appendicectomy. (external link)
• Florian Primavesi; Manuel Maglione; Federica Cipriani et al. (2023). E-AHPBA-ESSO-ESSR Innsbruck consensus guidelines for preoperative liver function assessment before hepatectomy. (external link)
• Marianne Berg; Hanne Hagland; Kjetil Søreide (2014). Comparison of CpG island methylator phenotype (CIMP) frequency in colon cancer using different probe- and gene-specific scoring alternatives on recommended multi-gene panels. (external link)
• Tom Glomsaker; Kjetil Søreide; Geir Hoff et al. (2011). Contemporary use of endoscopic retrograde cholangiopancreatography (ERCP): A Norwegian prospective, multicenter study. (external link)
• Kjetil Søreide; Kenneth Thorsen; Ewen M. Harrison et al. (2015). Perforated peptic ulcer. (external link)
• Linn Såve Nymo; Kjetil Søreide; Dyre Kleive et al. (2018). The effect of centralization on short term outcomes of pancreatoduodenectomy in a universal health care system. (external link)
• Kjetil Søreide; Giovanni Marchegiani (2021). Clinical Management of Pancreatic Premalignant Lesions. (external link)
• Hannah S. Thomas; Thomas G. Weiser; Thomas M. Drake et al. (2019). Pooled analysis of WHO Surgical Safety Checklist use and mortality after emergency laparotomy. (external link)
• Roland Andersson; Kjetil Søreide; Daniel Ansari (2019). The dilemma of drains after pancreatoduodenectomy: Still an issue?. (external link)
• Christian Sturesson; Kjetil Søreide (2025). Preoperative management and resectability criteria in perihilar cholangiocarcinoma. (external link)
• James C. Glasbey; Adewale O. Adisa; Ainhoa Costas-Chavarri et al. (2019). Global variation in anastomosis and end colostomy formation following left-sided colorectal resection.. (external link)
• Thomas M. Drake; Francesco Pata; Dhruv Ghosh et al. (2020). Surgical site infection after gastrointestinal surgery in children: an international, multicentre, prospective cohort study.. (external link)
• Thomas Kristiansen; Hans Morten Lossius; Marius Rehn et al. (2014). Epidemiology of trauma: A population-based study of geographical risk factors for injury deaths in the working-age population of Norway. (external link)
• Torhild Veen; Kjartan Stormark; Bjørn Steinar Olden Nedrebø et al. (2015). Long-term follow-up and survivorship after completing systematic surveillance in stage I–III colorectal cancer: who is still at risk?. (external link)
• Hanne Fuglseth; Kjetil Søreide; Morten Vetrhus (2023). Acute mesenteric ischaemia. (external link)
• Kjetil Søreide (2022). Time to halt perioperative chemotherapy for resectable colorectal liver metastasis?. (external link)
• Christopher J.L. Murray; Ryan M. Barber; Kyle J. Foreman et al. (2015). Global, regional, and national disability-adjusted life years (DALYs) for 306 diseases and injuries and healthy life expectancy (HALE) for 188 countries, 1990-2013: quantifying the epidemiological transition.. (external link)
• Kjetil Søreide (2011). High-fidelity of Five Quasimonomorphic Mononucleotide Repeats to High-frequency Microsatellite Instability Distribution in Early-stage Adenocarcinoma of the Colon. (external link)
• Jon Arne Søreide; Erling Sandøy Undersrud; Mohammed Al-Saiddi et al. (2016). Primary Leiomyosarcoma of the Pancreas—a Case Report and a Comprehensive Review. (external link)
• Lorenzo Cobianchi; Daniele Piccolo; Francesca Dal Mas et al. (2023). Surgeons’ perspectives on artificial intelligence to support clinical decision-making in trauma and emergency contexts: results from an international survey. (external link)
• Bjørn Steinar Olden Nedrebø; Kjetil Søreide; Morten Tandberg Eriksen et al. (2013). Excess mortality after curative surgery for colorectal cancer changes over time and differs for patients with colon versus rectal cancer. (external link)
• Kjetil Søreide (2018). Numbers needed to tweet: social media and impact on surgery. (external link)
• Kenneth Thorsen; Jon Arne Søreide; Kjetil Søreide (2014). What is the best predictor of mortality in perforated peptic ulcer disease? A population-based, multivariable regression analysis including three clinical scoring systems. (external link)
• Kjetil Søreide; Sheraz Yaqub; Julie Hallet et al. (2020). A Risk Model of Admitting Patients with Silent SARS-CoV-2 Infection to Surgery and Development of Severe Postoperative Outcomes and Death: Projections Over 24 Months for 5 Geographical Regions. (external link)
• Jacob Ghotbi; Sheraz Yakub; Kjetil Søreide (2023). Management of extrahepatic bile duct cysts. (external link)
• Christina Fitzmaurice; Daniel Dicker; Amanda Pain et al. (2015). The Global Burden of Cancer 2013. (external link)
• Aneel Bhangu; J. Edward Fitzgerald; Stuart Fergusson et al. (2014). Determining universal processes related to best outcome in emergency abdominal surgery: A multicentre, international, prospective cohort study. (external link)
• Sheraz Yakub; Georgios Antonios Margonis; Kjetil Søreide (2023). Staged or Simultaneous Surgery for Colon or Rectal Cancer with Synchronous Liver Metastases: Implications for Study Design and Clinical Endpoints. (external link)
• Satu Oltedal; Hartwig Kørner; Ole Gunnar Aasprong et al. (2018). The Prognostic Relevance of Sentinel Lymph Node Metastases Assessed by PHGR1 mRNA Quantification in Stage I to III Colon Cancer. (external link)
• Martin Watson; Dordi Lea; Hanne Røland Hagland et al. (2019). Elevated microsatellite alterations at selected tetranucleotides (EMAST) is not attributed to MSH3 loss in stage I-III colon cancer: An automated, digitalized assessment by immunohistochemistry of whole slides and hot spots. (external link)
• Linn Såve Nymo; Dyre Kleive; Kim Waardal et al. (2020). Centralizing a national pancreatoduodenectomy service: striking the right balance. (external link)
• Martin Matthew Christian Watson; Kjetil Søreide (2016). The prognostic yield of biomarkers harvested in chemotherapy-naive stage ii colon cancer: Can we separate the wheat from the chaff?. (external link)
• Marja A. Boermeester; David J. Humes; George C. Velmahos et al. (2016). Contemporary review of risk-stratified management in acute uncomplicated and complicated diverticulitis. (external link)
• Kjetil Søreide; Bjørn Steinar Nedrebø; Jon Arne Søreide et al. (2009). Lymph node harvest in colon cancer: influence of microsatellite instability and proximal tumor location. (external link)
• Kristoffer Lassen; Linn Såve Nymo; Frank Olsen et al. (2018). Contemporary practice and short-term outcomes after liver resections in a complete national cohort. (external link)
• Rebecca C. Grossman; Douglas Graham Mackenzie; Deborah S. Keller et al. (2020). #SoMe4Surgery: From inception to impact. (external link)
• Kjetil Søreide; Tom Glomsaker; Jon Arne Søreide (2008). Surgery in Norway Beyond the Scalpel in the 21st Century. (external link)
• Martin Matthew Christian Watson; Dordi Lea; Einar Gudlaugsson et al. (2020). Prevalence of PD‑L1 expression is associated with EMAST, density of peritumoral T‑cells and recurrence‑free survival in operable non‑metastatic colorectal cancer. (external link)
• Hanne Røland Hagland; Dordi Lea; Martin Matthew Christian Watson et al. (2017). Correlation of blood T-cells to intratumoural density and location of CD3+ and CD8+ T-cells in colorectal cancer. (external link)
• Olivia Sgarbura; Graham Mackenzie; Marcus Holmberg et al. (2021). Social Media for the Hepato-Pancreato-Biliary community (#SoMe4HPB): connecting a specialized online group for scientific and clinical knowledge dissemination. (external link)
• Clemens Weber; David Andreas Thomas Werner; Kenneth Thorsen et al. (2022). Health Care Implications of the COVID-19 Pandemic for Patients with Severe Traumatic Brain Injury—A Nationwide, Observational Cohort Study. (external link)
• Thomas Kristiansen; Hans Morten Lossius; Kjetil Søreide et al. (2011). Patients referred to a Norwegian trauma centre: effect of transfer distance on injury patterns, use of resources and outcomes. (external link)
• Graham Mackenzie; Kjetil Søreide; Karol Polom et al. (2020). Beyond the hashtag – An exploration of tweeting and replies at the European Society of Surgical Oncology 39th clinical conference (ESSO39). (external link)
• Sina Furnes Øyri; Kjetil Søreide; Eldar Søreide et al. (2023). Learning from experience: a qualitative study of surgeons' perspectives on reporting and dealing with serious adverse events. (external link)
• Kjetil Søreide; Kenneth Thorsen; Jon Arne Søreide (2014). Predicting outcomes in patients with perforated gastroduodenal ulcers: artificial neural network modelling indicates a highly complex disease. (external link)
• Celine Oanæs; Marina Alexeeva; Kjetil Søreide et al. (2025). Salting-out assisted liquid-liquid extraction for UPLC-MS/MS determination of bile acids and kynurenine-, indole- and serotonin-pathway metabolites of tryptophan in human serum of healthy probands. (external link)
• Kjetil Søreide; Kenneth Thorsen; Jon Arne Søreide (2016). Clinical patterns of presentation and attenuated inflammatory response in octo- and nonagenarians with perforated gastroduodenal ulcers.. (external link)
• Kjetil Søreide (2016). Measuring the health-related Sustainable Development Goals in 188 countries: a baseline analysis from the Global Burden of Disease Study 2015.. (external link)
• Sini Takala; Kristoffer Lassen; Kjetil Søreide et al. (2023). Practice patterns in diagnostics, staging, and management strategies of gallbladder cancer among Nordic tertiary centers. (external link)
• Knut Jørgen Labori; Svein Olav Bratlie; Bodil Andersson et al. (2024). Neoadjuvant FOLFIRINOX versus upfront surgery for resectable pancreatic head cancer (NORPACT-1): a multicentre, randomised, phase 2 trial. (external link)
• Kjetil Søreide; Linn Såve Nymo; Dyre Kleive et al. (2019). Variation in use of open and laparoscopic distal pancreatectomy and associated outcome metrics in a universal health care system. (external link)
• Andreas Reite; Kjetil Søreide; Morten Vetrhus (2016). Comparing the accuracy of four prognostic scoring systems in patients operated on for ruptured abdominal aortic aneurysms. (external link)
• Joana FF Simoes; Michel Adamina; Adesoji Ademuyiwa et al. (2022). The impact of surgical delay on resectability of colorectal cancer: An international prospective cohort study. (external link)
• Aneel Bhangu; J. E. F. Fitzgerald; O. Ademuyiwa et al. (2016). Mortality of emergency abdominal surgery in high-, middle- and low-income countries.. (external link)
• Roland Andersson; Kjetil Søreide; Daniel Ansari (2019). Surgical Infections and Antibiotic Stewardship: In Need for New Directions. (external link)
• Kjetil Søreide; Warsan Ismail; Marcus Thomas Thor Roalsø et al. (2023). Early Diagnosis of Pancreatic Cancer: Clinical Premonitions, Timely Precursor Detection and Increased Curative-Intent Surgery. (external link)
• Kjetil Søreide; Jon Arne Søreide; Hartwig Kørner (2011). Prognostic role of carcinoembryonic antigen is influenced by microsatellite instability genotype and stage in locally advanced colorectal cancers. (external link)
• Geir Nævdal; Einar K Rofstad; Kjetil Søreide et al. (2022). Fluid-sensitive migration mechanisms predict association between metastasis and high interstitial fluid pressure in pancreatic cancer. (external link)
• Hampus Holmer; Abebe Bekele; Lars Hagander et al. (2018). Evaluating the collection, comparability and findings of six global surgery indicators. (external link)
• Dordi Lea; Einar G. Gudlaugsson; Ivar Skaland et al. (2021). Digital Image Analysis of the Proliferation Markers Ki67 and Phosphohistone H3 in Gastroenteropancreatic Neuroendocrine Neoplasms: Accuracy of Grading Compared with Routine Manual Hot Spot Evaluation of the Ki67 Index. (external link)
• Mohsen Naghavi; Haidong Wang; Rafael Lozano et al. (2014). Global, regional, and national age-sex specific all-cause and cause-specific mortality for 240 causes of death, 1990-2013: A systematic analysis for the Global Burden of Disease Study 2013. (external link)
• Andreas Reite; Kjetil Søreide; Christian Lycke Ellingsen et al. (2015). Epidemiology of ruptured abdominal aortic aneurysms in a well-defined Norwegian population with trends in incidence, intervention rate, and mortality. (external link)
• Marianne Berg; Oddmund Nordgård; Hartwig Kørner et al. (2015). Molecular subtypes in stage II-III colon cancer defined by genomic instability: Early recurrence-risk associated with a high copy-number variation and loss of RUNX3 and CDKN2A. (external link)
• Johannes Wiik Larsen; Kenneth Thorsen; Kjetil Søreide (2023). Splenic injury from blunt trauma. (external link)
• Kjetil Søreide (2012). Tibial fracture with degloving injury of the foot. (external link)
• Federico Coccolini; Massimo Sartelli; Yoram Kluger et al. (2022). The LIFE TRIAD of emergency general surgery. (external link)
• Terje Meling; Knut Harboe; Asvaldur Arthursson et al. (2010). Steppingstones to the implementation of an inhospital fracture and dislocation registry using the AO/OTA classification : compliance, completeness and commitment. (external link)
• Kjetil Søreide; Einar Gudlaugsson; Ivar Skaland et al. (2008). Metachronous cancer development in patients with sporadic colorectal adenomas - multivariate risk model with independent and combined value of hTERT and survivin. (external link)
• Oddmund Nordgård; Satu Oltedal; Ole Gunnar Aasprong et al. (2012). Prognostic relevance of occult metastases detected by cytokeratin 20 and mucin 2 mRNA levels in sentinel lymph nodes from colon cancer patients. (external link)
• Kaja Christine Graue Berg; Anita Sveen; Maren Høland et al. (2019). Gene expression profiles of CMS2-epithelial/canonical colorectal cancers are largely driven by DNA copy number gains. (external link)
• Oddvar Mathias Sandvik; Kjetil Søreide; Einar Gudlaugsson et al. (2016). Epidemiology and classification of gastroenteropancreatic neuroendocrine neoplasms using current coding criteria. (external link)
• Alba Manuel-Vázquez; Anita Balakrishnan; Paul Agami et al. (2022). A scoring system for predicting malignancy in intraductal papillary mucinous neoplasms of the pancreas: a multicenter EUROPEAN validation. (external link)
• Kjetil Søreide (2010). Temporal patterns of death after trauma: evaluation of circadian, diurnal, periodical and seasonal trends in 260 fatal injuries. (external link)
• Jørgen Bendik Vennesland; Kjetil Søreide; Jan Terje Kvaløy et al. (2019). A Population-Based Study of Incidence, Presentation, Management and Outcome of Primary Thromboembolic Ischemia in the Upper Extremity. (external link)
• Kenneth Thorsen; Morten Vetrhus; Jon Narvestad et al. (2020). Performance and outcome evaluation of emergency resuscitative thoracotomy in a Norwegian trauma centre: a population-based consecutive series with survival benefits. (external link)
• Johannes Wiik Larsen; Kjetil Søreide; Jon Arne Søreide et al. (2022). Epidemiology of abdominal trauma: An age- and sex-adjusted incidence analysis with mortality patterns. (external link)
• James C Glasbey; Tom EF Abbott; Adesoji Ademuyiwa et al. (2022). Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries. (external link)
• Kjetil Søreide; Benedicte Skjold-Ødegaard; Kenneth Thorsen et al. (2021). Adhesions after open and laparoscopic abdominal surgery. (external link)
• Guro Elisabeth Lind; Marianne Guriby; Terje Cruickshank Ahlquist et al. (2017). Prognostic relevance of an epigenetic biomarker panel in sentinel lymph nodes from colon cancer patients. (external link)
• Kjetil Søreide; Marianne Berg; Birthe Sofie Skudal et al. (2011). Advances in the understanding and treatment of colorectal cancer. (external link)
• Jon Narvestad; Maryam Meshkinfamfard; Kjetil Søreide (2015). Emergency resuscitative thoracotomy performed in European civilian trauma patients with blunt or penetrating injuries: a systematic review. (external link)
• Thomas M. Drake; J. Edward F Fitzgerald; Dan Poenaru et al. (2016). Determinants of morbidity and mortality following emergency abdominal surgery in children in low-income and middle-income countries. (external link)
• Dyre Kleive; Mushegh Sahakyan; Kjetil Søreide et al. (2018). Risk for hemorrhage after pancreatoduodenectomy with venous resection. (external link)
• Benedicte Skjold-Ødegaard; Hege Langli Ersdal; Jörg Assmus et al. (2024). Internal and external factors affecting the performance score of surgical trainees doing laparoscopic appendectomy: a prospective, observational cohort study in a structured training programme. (external link)
• Oddvar Mathias Sandvik; Kjetil Søreide; Jan Terje Kvaløy et al. (2011). Epidemiology of gastrointestinal stromal tumours: single-institution experience and clinical presentation over three decades. (external link)
• Dordi Lea; Martin Matthew Christian Watson; Ivar Skaland et al. (2021). A template to quantify the location and density of CD3 + and CD8 + tumor-infiltrating lymphocytes in colon cancer by digital pathology on whole slides for an objective, standardized immune score assessment. (external link)
• Kjetil Søreide; Elena Rangelova; Christina Dopazo et al. (2023). Pancreatic cancer. (external link)
• Kjartan Stormark; Kjetil Søreide; Jon Arne Søreide et al. (2016). Nationwide implementation of laparoscopic surgery for colon cancer: short-term outcomes and long-term survival in a population-based cohort. (external link)
• James Lucocq; Beate Haugk; Nejo Joseph et al. (2024). Invasive intraductal oncocytic papillary neoplasms (IOPN) and adenocarcimoma arising from intraductal papillary mucinous neoplasms (A-IPMN) of the pancreas: comparative analysis of clinicopathological features, patterns of recurrence and survival: a multicentre study. (external link)
• Bjørn Steinar Olden Nedrebø; Kjetil Søreide; Arild Nesbakken et al. (2013). Risk factors associated with poor lymph node harvest after colon cancer surgery in a national cohort. (external link)
• Kjetil Søreide; Andreas J. Krüger; AL Vårdal et al. (2007). Epidemiology and contemporary patterns of trauma deaths: changing place, similar pace, older face. (external link)
• Dordi Lea; Claudia Zaharia; Kjetil Søreide (2024). Programmed death ligand-1 (PD-L1) clone 22C3 expression in resected colorectal cancer as companion diagnostics for immune checkpoint inhibitor therapy: A comparison study and inter-rater agreement evaluation across proposed cut-offs and predictive (TPS, CPS and IC) scores. (external link)
• Kjetil Søreide; Andreas J. Krüger; Christian Lycke Ellingsen et al. (2009). Pediatric trauma deaths are predominated by severe head injuries during spring and summer. (external link)
• Benedicte Skjold-Ødegaard; Hege Langli Ersdal; Jörg Assmus et al. (2021). Development and clinical implementation of a structured, simulation-based training programme in laparoscopic appendectomy: Description, validation and evaluation. (external link)
• Kjetil Søreide (2016). Current insight into pathophysiology of gastroduodenal ulcers: Why do only some ulcers perforate?. (external link)
• Martin Watson; Arezo Kanani; Dordi Lea et al. (2019). Elevated Microsatellite Alterations at Selected Tetranucleotides (EMAST) in Colorectal Cancer is Associated with an Elderly, Frail Phenotype and Improved Recurrence-Free Survival. (external link)
• Kenneth Thorsen; Jon Arne Søreide; Kjetil Søreide (2016). Long-term mortality in patients operated for perforated peptic ulcer: factors limiting longevity are dominated by older age, comorbidity burden and severe postoperative complications. (external link)
• Braden Woodhouse; Savio G. Barreto; Kjetil Søreide et al. (2023). A core set of quality performance indicators for HPB procedures: a global consensus for hepatectomy, pancreatectomy, and complex biliary surgery. (external link)
• Kjetil Søreide (2010). Endoscopic surveillance after curative surgery for sporadic colorectal cancer: patient-tailored, tumor-targeted or biology-driven?. (external link)
• Marianne Berg; Kjetil Søreide (2012). EGFR and Downstream Genetic Alterations in KRAS/BRAF and PI3K/AKT Pathways in Colorectal Cancer — Implications for Targeted Therapy. (external link)
• Arezo Kanani; Torhild Veen; Kjetil Søreide (2021). Neoadjuvant immunotherapy in primary and metastatic colorectal cancer. (external link)
• Hartwig Kørner; Hans Jørgen Nielsen; Jon Arne Søreide et al. (2009). Diagnostic Accuracy of C-reactive Protein for Intraabdominal Infections After Colorectal Resections. (external link)
• Robbert-Jan Sjoerd Lindeman; Malin Sund; Jenny Löfgren et al. (2020). Preventing spread of SARS-CoV-2 and preparing for the COVID-19 outbreak in the surgical department: Perspectives from two Scandinavian countries. (external link)
• Saed Safiri; Sadaf G. Sepanlou; Kevin S. Ikuta et al. (2019). The global, regional, and national burden of colorectal cancer and its attributable risk factors in 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017. (external link)
• Kjetil Søreide; Benedicte Skjold-Ødegaard (2022). A multilevel, step-based model to evaluate progress in procedure efficiency for laparoscopic appendicectomy in surgical training: structured evaluation using 'ebb-and-flow' and 'string-of-pearls' concepts. (external link)
• Kjetil Søreide (2017). Cancer biology of small gastrointestinal stromal tumors (<2 cm): What is the risk of malignancy?. (external link)
• Mwayi Kachapila; Mark Monahan; Adesoji O. Ademuyiwa et al. (2023). Exploring the cost-effectiveness of high versus low perioperative fraction of inspired oxygen in the prevention of surgical site infections among abdominal surgery patients in three low- and middle-income countries. (external link)
• Marcus Thomas Thor Roalsø; Jan Rune Aunan; Kjetil Søreide (2020). Refined TNM-staging for pancreatic adenocarcinoma – Real progress or much ado about nothing?. (external link)
• Terje Meling; Knut Harboe; Cathrine Harstad Enoksen et al. (2013). Reliable classification of children's fractures according to the comprehensive classification of long bone fractures by Muller. (external link)
• Claudia Zaharia; Kjetil Søreide (2023). Call for better response evaluation after neoadjuvant therapy in pancreatic cancer. (external link)
• Theo Vos; Christine Allen; Megha Arora et al. (2016). Global, regional, and national incidence, prevalence, and years lived with disability for 310 diseases and injuries, 1990-2015: a systematic analysis for the Global Burden of Disease Study 2015. (external link)
• Marcus Thomas Thor Roalsø; Daniel L. Hughes; Patrik Larsson et al. (2025). Mucinous cystic neoplasia (MCN) of the pancreas: systematic review and meta-analysis of sex differences in prevalence and malignancy risk between males and females. (external link)
• Osaid Alser; Ander Dorken Gallastegi; Anthony Gebran et al. (2022). Outcomes and Their State-level Variation in Patients Undergoing Surgery With Perioperative SARS-CoV-2 Infection in the USA: A Prospective Multicenter Study. (external link)
• Kjetil G. Ringdal; Hans Morten Lossius; Mary Jones et al. (2011). Collecting core data in severely injured patients using a consensus trauma template: an international multicentre study. (external link)
• Tia Tidwell; Gro Vatne Røsland; Karl Johan Tronstad et al. (2024). Comparing in vitro cytotoxic drug sensitivity in colon and pancreatic cancer using 2D and 3D cell models: Contrasting viability and growth inhibition in clinically relevant dose and repeated drug cycles. (external link)
• Terje Meling; Knut Harboe; Kjetil Søreide (2009). Incidence of traumatic long-bone fractures requiring in-hospital management: A prospective age- and gender-specific analysis of 4890 fractures. (external link)
• Kjetil Søreide; Martin Matthew Christian Watson; Dordi Lea et al. (2016). Assessment of clinically related outcomes and biomarker analysis for translational integration in colorectal cancer (ACROBATICC): Study protocol for a population-based, consecutive cohort of surgically treated colorectal cancers and resected colorectal liver metastasis. (external link)
• Torhild Veen; Arezo Kanani; Claudia Zaharia et al. (2024). Treatment-sequencing before and after index hepatectomy with either synchronous or metachronous colorectal liver metastasis: Comparison of recurrence risk, repeat hepatectomy and overall survival in a population-derived cohort. (external link)
• Tom Glomsaker; Kjetil Søreide; Lars Aabakken et al. (2011). A national audit of temporal trends in endoscopic retrograde cholangiopancreatography in Norway. (external link)
• Kjartan Stormark; Peter-Martin Krarup; Annika Sjövall et al. (2020). Anastomotic leak after surgery for colon cancer and effect on long‐term survival. (external link)
• James C Glasbey; Dmitri Nepogodiev; Joana FF Simoes et al. (2020). Elective Cancer Surgery in COVID-19-Free Surgical Pathways During the SARS-CoV-2 Pandemic: An International, Multicenter, Comparative Cohort Study. (external link)
• Kjetil Søreide; Andreas Reite; Rune Haaverstad (2017). Missed diagnosis of a large, right-sided diaphragmatic rupture with herniated liver and concomitant liver laceration after blunt trauma: consequences for delayed surgical repair. (external link)
• C. Khatri; AE Ward; D Nepogodiev et al. (2021). Outcomes after perioperative SARS-CoV-2 infection in patients with proximal femoral fractures: an international cohort study. (external link)
• Massimo Sartelli; Dieter G. Weber; Etienne Ruppe et al. (2016). Antimicrobials: A global alliance for optimizing their rational use in intra-abdominal infections (AGORA). (external link)
• Antonio Tursi; Giovanni Brandimarte; Francesco Di Mario et al. (2016). Predictive value of the Diverticular Inflammation and Complication Assessment (DICA) endoscopic classification on the outcome of diverticular disease of the colon: An international study. (external link)
• Morten Vetrhus; Andreas Reite; Jørgen Bendik Vennesland et al. (2017). Characteristics, Stratification and Time to Death in a Population-Based Cohort of Patients with Ruptured Abdominal Aortic Aneurysms Not Undergoing Surgery. (external link)
• Joakim Stray Andreassen; Kenneth Thorsen; Kjetil Søreide et al. (2022). Is there a weekend effect on mortality rate and outcome for moderate and severe traumatic brain injury? A population-based, observational cohort study. (external link)
• Marcus Thomas Thor Roalsø; Marina Alexeeva; Celine Oanæs et al. (2024). Patient-derived organoids from pancreatic cancer after pancreatectomy: Feasibility and organoid take rate in treatment-naïve periampullary tumors. (external link)
• Jon Arne Søreide; Jan Terje Kvaløy; Dordi Lea et al. (2021). The overriding role of surgery and tumor grade for long-term survival in patients with gastroenteropancreatic neuroendocrine neoplasms: A population-based cohort study. (external link)
• René Vonlanthen; Peter Lodge; Jeffrey S. Barkun et al. (2018). Toward a consensus on centralization in surgery. (external link)
• Ewen M. Harrison; N. Gobin; A.V. Freitas et al. (2024). Development and external validation of the 'Global Surgical-Site Infection' (GloSSI) predictive model in adult patients undergoing gastrointestinal surgery. (external link)
• Haidong Wang; Mohsen Naghavi; Christine Allen et al. (2016). Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980-2015: a systematic analysis for the Global Burden of Disease Study 2015. (external link)
• Claudia Zaharia; Kjetil Søreide (2022). Accuracy of Lymph Node Staging in Pancreatic Cancer after Neoadjuvant Therapy. (external link)
• Bjørn Steinar Olden Nedrebø; Kjetil Søreide; Morten Tandberg Eriksen et al. (2011). Survival effect of implementing national treatment strategies for curatively resected colonic and rectal cancer. (external link)
• Anna Reuter; Lisa Rogge; Mark Monahan et al. (2022). Global economic burden of unmet surgical need for appendicitis. (external link)
• Siobhan C Mckay; Thomas M. Drake; Harry VM Spiers et al. (2022). Outcomes of patients undergoing elective liver and pancreas cancer surgery during the SARS-CoV-2 pandemic: an international, multicentre, prospective cohort study. (external link)
• Kristoffer Lassen; Linn Såve Nymo; Frank Olsen et al. (2018). Benchmarking of aggregated length of stay after open and laparoscopic surgery for cancers of the digestive system. (external link)
• Julie Hallet; Joel Shapiro; Andreas Pascher et al. (2025). Care of neuroendocrine tumours: The Collaborative of sUrgical Teams for NeuroEndocrine Tumors (CUTNETs). (external link)
• Andreas Brandl; Dara Lundon; Ajith K. Siriwardena et al. (2024). Surgical management of pancreatic neuroendocrine tumors – An EYSAC and E-AHPBA international survey of current practice. (external link)
• Anthony Gebran; Apostolos Gaitanidis; Dias Argandykov et al. (2022). Mortality and pulmonary complications in emergency general surgery patients with COVID-19: A large international multicenter study. (external link)
• Maryam Meshkinfamfard; Jon Narvestad; Johannes Wiik Larsen et al. (2021). Structured and systematic team and procedure training in severe trauma: Going from ‘Zero to Hero’ for a time-critical, low-volume emergency procedure over three time periods. (external link)
• Knut Harboe; Nils Roar Gjerdet; Einar Sudmann et al. (2014). Assessment of retention force and bone apposition in two differently coated femoral stems after 6 months of loading in a goat model. (external link)
• Kenneth Thorsen; Tom Glomsaker; Andreas Von Meer et al. (2011). Trends in diagnosis and surgical management of patients with perforated peptic ulcer. (external link)
• Floris M. Thunnissen; Daan J. Comes; Carmen S.S. Latenstein et al. (2023). A mixed-methods study to define Textbook Outcome for the treatment of patients with uncomplicated symptomatic gallstone disease with hospital variation analyses in Dutch trial data. (external link)
• Dmitri Nepogodiev; James C Glasbey; Elizabeth Li et al. (2020). Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study. (external link)
• Kenneth Thorsen; Jon Narvestad; Kjell Egil Tjosevik et al. (2021). Changing from a two-tiered to a one-tiered trauma team activation protocol: a before–after observational cohort study investigating the clinical impact of undertriage. (external link)
• Marco Del Chiaro; Kjetil Søreide (2018). Trials and tribulations of neoadjuvant therapy in pancreatic cancer. (external link)
• Theo Vos; Ryan M. Barber; Brad Bell et al. (2015). Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990-2013: A systematic analysis for the Global Burden of Disease Study 2013. (external link)
• Tim Reese; Stefan Gilg; Marc G. Besselink et al. (2025). Preferred content, construct, and duration of a fellowship structure in HPB surgery: a cross-sectional, pan-European survey among trainees and trainers. (external link)
• Kjetil Søreide; Bjarte Aagnes; Bjørn Møller et al. (2010). Epidemiology of pancreatic cancer in Norway: trends in incidence, basis of diagnosis and survival 1965-2007. (external link)
• Dmitri Nepogodiev; Omar M Omar; James C Glasbey et al. (2020). Elective surgery cancellations due to the COVID-19 pandemic: global predictive modelling to inform surgical recovery plans. (external link)
• Joana FF Simoes; Elizabeth Li; James C Glasbey et al. (2021). COVID-19-related absence among surgeons: development of an international surgical workforce prediction model. (external link)
• James C Glasbey; Adesoji Ademuyiwa; Adewale Adisa et al. (2021). Effect of COVID-19 pandemic lockdowns on planned cancer surgery for 15 tumour types in 61 countries: an international, prospective, cohort study.. (external link)
• Jacob Ghotbi; Mushegh Sahakyan; Kjetil Søreide et al. (2022). Minimally Invasive Pancreatoduodenectomy: Contemporary Practice, Evidence, and Knowledge Gaps. (external link)
• Marianne Berg; Marianne Guriby; Oddmund Nordgård et al. (2013). Influence of microsatellite instability and KRAS and BRAF mutations on lymph node harvest in stage I–III colon cancers. (external link)
• Oddvar Mathias Sandvik; Kjetil Søreide; Einar Gudlaugsson et al. (2015). Surgery for Gastrointestinal Stromal Tumors (GISTs) of the stomach and small bowel: Short- And long-term outcomes over three decades. (external link)
• S. Au; V. Bellato; J.M. Carvas et al. (2021). Global parental leave in surgical careers: differences according to gender, geographical regions and surgical career stages. (external link)
• Christian Rushfeldt; Uwe Agledahl; Baldur Sveinbjørnsson et al. (2016). Effect of Perioperative Dexamethasone and Different NSAIDs on Anastomotic Leak Risk: A Propensity Score Analysis. (external link)
• Kjetil Søreide (2009). Receiver-operating characteristic curve analysis in diagnostic, prognostic and predictive biomarker research. (external link)
• Akram Pourshams; Sadaf G. Sepanlou; Kevin S. Ikuta et al. (2019). The global, regional, and national burden of pancreatic cancer and its attributable risk factors in 195 countries and territories, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017. (external link)
• Kjetil Søreide; Annbjørg Søreide (2013). Using patient-reported outcome measures for improved decision-making in patients with gastrointestinal cancer – the last clinical frontier in surgical oncology?. (external link)
• Kjetil Søreide (2014). Acute Budd-Chiari syndrome associated with non-viral cryptogenic hepatocellular carcinoma: revisiting the ‘chicken or the egg’theory. (external link)
• James Lucocq; Nejo Joseph; Jake Hawkyard et al. (2024). Predictors of long-term survival after resection of adenocarcinoma arising from intraductal papillary mucinous neoplasm and derivation of a prognostic model: An international multicenter study (ADENO-IPMN study). (external link)
• Sean Bennett; Kjetil Søreide; Sepideh Gholami et al. (2020). Strategies for the delay of surgery in the management of resectable hepatobiliary malignancies during the COVID-19 pandemic. (external link)
• Kjetil Søreide; Oddvar Mathias Sandvik; Jon Arne Søreide et al. (2012). Tyrosine-kinase mutations in c-KIT and PDGFR-alpha genes of imatinib na &lt; ve adult patients with gastrointestinal stromal tumours (GISTs) of the stomach and small intestine: relation to tumour-biological risk-profile and long-term outcome. (external link)
• Martin Matthew Christian Watson; Dordi Lea; Emma Rewcastle et al. (2016). Elevated microsatellite alterations at selected tetranucleotides in early-stage colorectal cancers with and without high-frequency microsatellite instability: same, same but different?. (external link)
• Tia R. Tidwell; Gro Vatne Røsland; Karl Johan Tronstad et al. (2022). Metabolic flux analysis of 3D spheroids reveals significant differences in glucose metabolism from matched 2D cultures of colorectal cancer and pancreatic ductal adenocarcinoma cell lines. (external link)
• Kenneth Thorsen; Jon Arne Søreide; Jan Terje Kvaløy et al. (2013). Epidemiology of perforated peptic ulcer: Age- and gender-adjusted analysis of incidence and mortality. (external link)
• Nicholas J. Kassebaum; Megha Arora; Ryan M. Barber et al. (2016). Global, regional, and national disability-adjusted life-years (DALYs) for 315 diseases and injuries and healthy life expectancy (HALE), 1990-2015: a systematic analysis for the Global Burden of Disease Study 2015. (external link)
• Abdelnour Alhourani; Tia Tidwell; Ansooya Avinash Bokil et al. (2021). Metformin treatment response is dependent on glucose growth conditions and metabolic phenotype in colorectal cancer cells. (external link)
• Terje Meling; Knut Harboe; Cathrine Enoksen et al. (2012). How reliable and accurate is the AO/OTA comprehensive classification for adult long-bone fractures?. (external link)
• Marcus Thomas Thor Roalsø; Lars Normann Karlsen; Petr Buchmann et al. (2023). En ung mann med akutte magesmerter og anemi. (external link)
• James Lucocq; Beate Haugk; Daniel Parkinson et al. (2024). Precursor Epithelial Subtypes of Adenocarcinoma Arising from Intraductal Papillary Mucinous Neoplasms (A-IPMN): Clinicopathological Features, Recurrence and Response to Adjuvant Chemotherapy. (external link)
• Kjetil Søreide; Desmond C. Winter (2018). Global surgery in an ecosystem for worldwide health. (external link)
• Kjetil Søreide; Clemens Weber; Kenneth Thorsen (2020). Priorities for research in trauma care: creating a bucket list. (external link)
• Kjetil Søreide; Oddvar Mathias Sandvik; Jon Arne Søreide et al. (2016). Global epidemiology of gastrointestinal stromal tumours (GIST): A systematic review of population-based cohort studies. (external link)
• Kjetil Søreide; Aida Slewa; Pål J. Stokkeland et al. (2009). Microsatellite Instability and DNA Ploidy in Colorectal Cancer. (external link)
• Kjetil Søreide; Cristina Dopazo; Frederik Berrevoet et al. (2024). Biliary tract cancer. (external link)
• James Lucocq; Jake Hawkyard; Beate Haugk et al. (2024). Adjuvant chemotherapy for adenocarcinoma arising from intraductal papillary mucinous neoplasia: Multicentre ADENO-IPMN study. (external link)
• Juanita A. Haagsma; Nicholas Graetz; Ian Bollinger et al. (2016). The global burden of injury: incidence, mortality, disability-adjusted life years and time trends from the Global Burden of Disease study 2013. (external link)
• Clemens Weber; Joakim Stray Andreassen; MAZIAR BEHBAHANI et al. (2022). Characteristics, image findings and clinical outcome of moderate and severe traumatic brain injury among severely injured children: a population-based cohort study. (external link)
• Tom Birger Glomsaker; Geir Hoff; Jan Terje Kvaløy et al. (2013). Patterns and predictive factors of complications after endoscopic retrograde cholangiopancreatography. (external link)
• Massimo Sartelli; Francesco M. Labricciosa; Pamela Barbadoro et al. (2017). The Global Alliance for Infections in Surgery: Defining a model for antimicrobial stewardship-results from an international cross-sectional survey. (external link)
• Kjetil Søreide; Frederik Berrevoet; Isabella Frigerio et al. (2024). Benefits and barriers to accreditation of HPB center and fellowship programs in Europe: a strength-weakness-opportunity-and-threats (SWOT) analysis by an E-AHPBA-ESSO-UEMS ad hoc working committee. (external link)
• Kjetil Søreide; Desmond C. Winter (2010). Global survey of factors influencing choice of surgical journal for manuscript submission. (external link)
• Andreas Reite; Kjetil Søreide; Jan Terje Kvaløy et al. (2020). Long-Term Outcomes After Open Repair for Ruptured Abdominal Aortic Aneurysm. (external link)
• Benjamin Hess; Martin Cahenzli; Alastair Forbes et al. (2023). Management of acute mesenteric ischaemia: Results of a worldwide survey. (external link)
• M. Sugrue; R. Maier; E.E. Moore et al. (2017). Proceedings of resources for optimal care of acute care and emergency surgery consensus summit Donegal Ireland. (external link)
• Benedicte Skjold-Ødegaard; Hege Langli Ersdal; Jörg Assmus et al. (2021). Comparison of performance score for female and male residents in general surgery doing supervised real-life laparoscopic appendectomy: Is there a Norse shield-maiden effect?. (external link)

Doctoral thesis (PhD)

• Marcus Thomas Thor Roalsø; Kjetil Søreide; Hanne Røland Hagland (2026). Cancer Metabolism in Patients Undergoing Pancreatic Surgery: From clinical registry data to patient-derived organoids. (external link)
• Benedicte Skjold-Ødegaard; Kjetil Søreide; Hege Langli Ersdal (2026). Surgical training in laparoscopic appendectomy for junior trainees: A structured program, mixed methods and systems perspective. (external link)
• Andreas Reite; Morten Vetrhus; Kjetil Søreide (2019). “Epidemiology, Risk Assessment and Outcomes in Ruptured Abdominal Aortic Aneurysms”. (external link)
• Kjetil Søreide (2007). Metachronous and recurrent cancer development in colorectal neoplasia : clinical aspects, molecular biomarkers and proteomic patterns in surveillance and risk evaluation. (external link)

Academic literature review

• Vivek Peddakota; Bhargava Chikkala; Maheeth Anjan Kottapalli et al. (2026). Short-Term Outcomes of Arterial Divestment in Pancreatic Cancer: A Systematic Review and Single Arm Meta-Analysis of Observational Studies. (external link)
• Kjetil Søreide; Elen Martine Hauge; Maria Nyre Vigmostad (2025). Renal cell carcinoma with metastasis to the pancreas: a model for oligometastasis, oligoprogression and metastatic organotropism. (external link)
• Daniel Ansari; Jenny Rystedt; Kjetil Søreide et al. (2025). The challenge of disappearing colorectal liver metastasis: balancing considerations between tumor biology and clinical consequence for liver surgery. (external link)
• Alexander Kofler; Marlene Trattner; Vivien Mairinger et al. (2025). The Role of Perioperative Interleukin-6 Serum Levels on Liver Dysfunction and Infectious Complications After Hepatectomy—A Systematic Review. (external link)
• Celine Oanæs; Marcus Thomas Thor Roalsø; Marina Alexeeva et al. (2025). Patient-Derived Organoids from Pancreatic Neuroendocrine Tumors: A Systematic Review of PDO Take Rates, Molecular–Biological Characteristics, and Potential for Clinical Utility. (external link)
• S. Stättner; Kjetil Søreide; Julie Hallet et al. (2025). Theranostics in surgical oncology. (external link)
• Federico Coccolini; Massimo Sartelli; Robert Sawyer et al. (2023). Source control in emergency general surgery: WSES, GAIS, SIS-E, SIS-A guidelines. (external link)
• Kjetil Søreide; Bjørn Gunnar Nedrebø; Andreas Reite et al. (2009). Endoscopy, morphology, morphometry and molecular markers: predicting cancer risk in colorectal adenoma. (external link)
• Kjetil Søreide; Knut Jørgen Labori (2016). Risk factors and preventive strategies for post-operative pancreatic fistula after pancreatic surgery: a comprehensive review. (external link)
• Rebecca Grossman; Olivia Sgarbura; Julie Hallet et al. (2021). Social media in surgery: evolving role in research communication and beyond. (external link)
• Kjetil Søreide; Bjørn Gunnar Nedrebø; Jens-Christian Knapp et al. (2009). Evolving molecular classification by genomic and proteomic biomarkers in colorectal cancer: Potential implications for the surgical oncologist. (external link)
• Torhild Veen; Arezo Kanani; Dordi Lea et al. (2023). Clinical trials of neoadjuvant immune checkpoint inhibitors for early-stage operable colon and rectal cancer. (external link)
• Kjetil Søreide; Kenneth Thorsen; Jon Arne Søreide (2014). Strategies to improve the outcome of emergency surgery for perforated peptic ulcer. (external link)
• Patrizio Petrone; Sofía Espinoza-Villalobos; Gerard A. Baltazar et al. (2021). Fatal and non-fatal injuries due to suspension trauma syndrome: A systematic review of definition, pathophysiology, and management controversies. (external link)
• Mohammad H. Forouzanfar; Lily Alexander; H. Ross Anderson et al. (2015). Global, regional, and national comparative risk assessment of 79 behavioural, environmental and occupational, and metabolic risks or clusters of risks in 188 countries, 1990-2013: A systematic analysis for the Global Burden of Disease Study 2013. (external link)
• Massimo Sartelli; Alain Chichom-Mefire; Francesco M. Labricciosa et al. (2017). The management of intra-abdominal infections from a global perspective: 2017 WSES guidelines for management of intra-abdominal infections. (external link)
• Claudia Zaharia; Torhild Veen; Dordi Lea et al. (2022). Histopathological Growth Pattern in Colorectal Liver Metastasis and The Tumor Immune Microenvironment. (external link)
• Jan Rune Aunan; William C Cho; Kjetil Søreide (2017). The biology of aging and cancer: A brief overview of shared and divergent molecular hallmarks. (external link)
• Richard P.G. ten Broek; Pepijn Krielen; Salomone Di Saverio et al. (2018). Bologna guidelines for diagnosis and management of adhesive small bowel obstruction (ASBO): 2017 update of the evidence-based guidelines from the world society of emergency surgery ASBO working group. (external link)
• Federico Coccolini; Giulia Montori; Marco Ceresoli et al. (2017). The role of open abdomen in non-trauma patient: WSES Consensus Paper. (external link)
• Thomas Kristiansen; Kjetil Søreide; Kjetil G. Ringdal et al. (2010). Trauma systems and early management of severe injuries in Scandinavia: Review of the current state. (external link)
• Benedicte Skjold-Ødegaard; Kjetil Søreide (2022). The diagnostic differentiation challenge in acute appendicitis: How to distinguish between uncomplicated and complicated appendicitis in adults. (external link)
• Kjetil Søreide; Stefan Stättner; Julie Hallet (2023). Surgery as a Principle and Technical Consideration for Primary Tumor Resection of Small Bowel Neuroendocrine Tumors. (external link)
• Kjetil Søreide; Malin Sund (2015). Epidemiological-molecular evidence of metabolic reprogramming on proliferation, autophagy and cell signaling in pancreas cancer.. (external link)
• Christian Rushfeldt; Kjetil Søreide (2010). Kirurgisk behandling av pilonidal sykdom. (external link)
• Christina Fitzmaurice; Christine Allen; Ryan M. Barber et al. (2016). Global, regional, and national cancer incidence, mortality, years of life lost, years lived with disability, and disability-adjusted life-years for 32 cancer groups, 1990 to 2015: A Systematic Analysis for the Global Burden of Disease Study Global Burden of Disease Cancer Collaboration. (external link)
• Kjetil Søreide; Kari Festøy Desserud (2015). Emergency surgery in the elderly: the balance between function, frailty, fatality and futility.. (external link)
• Hanne Røland Hagland; Kjetil Søreide (2015). Cellular metabolism in colorectal carcinogenesis: Influence of lifestyle, gut microbiome and metabolic pathways.. (external link)
• Federico Coccolini; Giulia Montori; Fausto Catena et al. (2017). Splenic trauma: WSES classification and guidelines for adult and pediatric patients. (external link)
• Dyre Kleive; Eline Aas; Jon-Helge Angelsen et al. (2021). Simultaneous Resection of Primary Colorectal Cancer and Synchronous Liver Metastases: Contemporary Practice, Evidence and Knowledge Gaps. (external link)
• Massimo Sartelli; Fausto Catena; Fikri M. Abu-Zidan et al. (2017). Management of intra-abdominal infections: Recommendations by the WSES 2016 consensus conference. (external link)
• Kjetil Søreide; Marja A. Boermeester; David J. Humes et al. (2016). Acute colonic diverticulitis: modern understanding of pathomechanisms, risk factors, disease burden and severity. (external link)
• Federico Coccolini; Francesco Corradi; Massimo Sartelli et al. (2022). Postoperative pain management in non-traumatic emergency general surgery: WSES-GAIS-SIAARTI-AAST guidelines. (external link)
• William A Cambridge; Cameron Fairfield; James J. Powell et al. (2021). Meta-analysis and Meta-regression of Survival After Liver Transplantation for Unresectable Perihilar Cholangiocarcinoma. (external link)
• Kjetil Søreide; Thomas G. Weiser; Rowan W. Parks (2018). Clinical update on management of pancreatic trauma. (external link)
• Kjetil Søreide (2016). A forensic inquiry into compliance to guidelines for emergency resuscitative thoracotomy in trauma: If the dead can't talk and the living won't tell, it is a story half told. (external link)
• Oddmund Nordgård; Kjersti Tjensvoll; Bjørnar Gilje et al. (2018). Circulating tumour cells and DNA as liquid biopsies in gastrointestinal cancer. (external link)
• Tia Tidwell; Kjetil Søreide; Hanne Røland Hagland (2017). Aging, metabolism, and cancer development: From Peto's paradox to the Warburg effect. (external link)
• Hanne Hagland; Marianne Berg; Ingunn Westvik Jolma et al. (2013). Molecular Pathways and Cellular Metabolism in Colorectal Cancer. (external link)
• Kjetil Søreide (2012). The Epidemiology of Injury in Bungee Jumping, BASE Jumping, and Skydiving. (external link)
• Wim Ceelen; Kjetil Søreide (2023). Randomized controlled trials and alternative study designs in surgical oncology. (external link)
• Mushegh Sahakyan; Knut Jørgen Labori; Florian Primavesi et al. (2019). Minimally invasive pancreatic surgery-where are we going?. (external link)
• Cristina Dopazo; Kjetil Søreide; Elena Rangelova et al. (2024). Hepatocellular carcinoma. (external link)
• Robbert-Jan Sjoerd Lindeman; Kjetil Søreide (2020). The many faces of Meckel's diverticulum: Update on management in incidental and symptomatic patients. (external link)
• Kjetil Søreide; Julie Hallet; Jeffrey B. Matthews et al. (2020). Immediate and long-term impact of the COVID-19 pandemic on delivery of surgical services. (external link)
• Adam Zeyara; William Torén; Kjetil Søreide et al. (2021). The liver-first approach for synchronous colorectal liver metastases: A systematic review and meta-analysis of completion rates and effects on survival. (external link)
• Kenneth Thorsen; Jon Arne Søreide; Kjetil Søreide (2013). Scoring systems for outcome prediction in patients with perforated peptic ulcer. (external link)
• Thomas Kristiansen; Kjetil Søreide; Kjetil G. Ringdal et al. (2012). Trauma systems and early management of severe injuries in Scandinavia: review and current status. (external link)
• Jan Rune Aunan; Martin Matthew Christian Watson; Hanne Hagland et al. (2016). Molecular and biological hallmarks of ageing. (external link)
• Kjetil Søreide; Marcus Thomas Thor Roalsø; Jan Rune Aunan (2020). Is There a Trojan Horse to Aggressive Pancreatic Cancer Biology? A Review of the Trypsin-PAR2 Axis to Proliferation, Early Invasion, and Metastasis. (external link)
• Martin Matthew Christian Watson; Marianne Berg; Kjetil Søreide (2014). Prevalence and implications of elevated microsatellite alterations at selected tetranucleotides in cancer. (external link)
• Andrew G Schache; Richard Shaw; Michael Wing Sung Ho et al. (2021). Global wealth disparities drive adherence to COVID-safe pathways in head and neck cancer surgery. (external link)
• Kjetil Søreide; Hartwig Kørner; Jon Arne Søreide (2011). Diagnostic accuracy and receiver-operating characteristics curve analysis in surgical research and decision making. (external link)
• Jan Rune Aunan; Nigel B. Jamieson; Kjetil Søreide (2019). Observation or resection of pancreatic intraductal papillary mucinous neoplasm: An ongoing tug of war. (external link)
• Dordi Lea; Sven Håland; Hanne Hagland et al. (2014). Accuracy of TNM staging in colorectal cancer: A review of current culprits, the modern role of morphology and stepping-stones for improvements in the molecular era. (external link)
• Christian Rushfeldt; Baldur Sveinbjørnsson; Kjetil Søreide et al. (2011). Risk of anastomotic leakage with use of NSAIDs after gastrointestinal surgery. (external link)
• Kjetil Søreide; Rachel Victoria Guest; Ewen Munro Harrison et al. (2019). Systematic review of management of incidental gallbladder cancer after cholecystectomy. (external link)
• Kjetil Søreide; Julie Hallet; Nigel B. Jamieson et al. (2023). Optimal surgical approach for digestive neuroendocrine neoplasia primaries: Oncological benefits versus short and long-term complications. (external link)
• Lucia Carrion-Alvarez; Florian Primavesi; Kjetil Søreide et al. (2025). Liver metastases from colorectal cancer: A joint ESSO–EAHPBA–UEMS core curriculum collaboration. (external link)
• Federico Coccolini; Derek Roberts; Luca Ansaloni et al. (2018). The open abdomen in trauma and non-trauma patients: WSES guidelines. (external link)
• Kari Festøy Desserud; Torhild Veen; Kjetil Søreide (2016). Emergency general surgery in the geriatric patient. (external link)
• Jos van der Hage; Sergio Sandrucci; Riccardo Audisio et al. (2021). The ESSO core curriculum committee update on surgical oncology. (external link)
• Miklosh Bala; Fausto Catena; Jeffry Kashuk et al. (2022). Acute mesenteric ischemia: updated guidelines of the World Society of Emergency Surgery. (external link)
• Roberto Cirocchi; Kjetil Søreide; Salomone Di Saverio et al. (2018). Meta-analysis of perioperative outcomes of acute laparoscopic versus open repair of perforated gastroduodenal ulcers. (external link)
• Jonathan V.T. Tilsed; Andrea Casamassima; Hayato Kurihara et al. (2016). ESTES guidelines: acute mesenteric ischaemia. (external link)
• Kjetil Søreide; Martin Matthew Christian Watson; Hanne Røland Hagland (2016). Deciphering the Molecular Code to Colorectal Liver Metastasis Biology Through Microsatellite Alterations and Allelic Loss: The Good, the Bad, and the Ugly. (external link)
• Kenneth Thorsen; Kjetil G. Ringdal; Kristian Strand et al. (2011). Clinical and cellular effects of hypothermia, acidosis and coagulopathy in major injury. (external link)
• Kjetil Søreide (2014). Clinical and translational aspects of hypothermia in major trauma patients: From pathophysiology to prevention, prognosis and potential preservation. (external link)
• Salomone Di Saverio; Arianna Birindelli; Micheal D. Kelly et al. (2016). WSES Jerusalem guidelines for diagnosis and treatment of acute appendicitis. (external link)
• Thomas M. Drake; Kjetil Søreide (2019). Cancer epigenetics in solid organ tumours: A primer for surgical oncologists. (external link)
• Salomone Di Saverio; Mauro Podda; Belinda De Simone et al. (2020). Diagnosis and treatment of acute appendicitis: 2020 update of the WSES Jerusalem guidelines. (external link)
• Kjetil Søreide; Derek Alderson; Anders Bergenfelz et al. (2013). Strategies to improve clinical research in surgery through international collaboration. (external link)
• Marianne Berg; Kjetil Søreide (2011). Genetic and Epigenetic Traits as Biomarkers in Colorectal Cancer. (external link)
• Torhild Veen; Bjørn Steinar Olden Nedrebø; Kjartan Stormark et al. (2013). Qualitative and quantitative issues of lymph nodes as prognostic factor in colon cancer. (external link)
• Mauro Podda; Belinda De Simone; Marco Ceresoli et al. (2022). Follow-up strategies for patients with splenic trauma managed non-operatively: the 2022 World Society of Emergency Surgery consensus document. (external link)
• Ingrid Antonsen; Veronica Berle; Kjetil Søreide (2017). Stumpe pancreasskader hos barn. (external link)
• Arezo Kanani; Torhild Veen; Marina Alexeeva et al. (2023). Neoadjuvant immunotherapy in colorectal cancer beyond immune checkpoint inhibitors: emerging from bench to bedside. (external link)
• Marcus Thomas Thor Roalsø; Øyvind Hald; Marina Alexeeva et al. (2022). Emerging Role of Epigenetic Alterations as Biomarkers and Novel Targets for Treatments in Pancreatic Ductal Adenocarcinoma. (external link)
• Kjetil Søreide; Andrew J. Healey; Damian J. Mole et al. (2019). Pre-, peri- and post-operative factors for the development of pancreatic fistula after pancreatic surgery. (external link)
• Daniel Ansari; Kjetil Søreide; Bodil Andersson et al. (2024). Surveillance after surgery for pancreatic cancer: a global scoping review of guidelines and a nordic Survey of contemporary practice. (external link)
• Carl-Christian Hansen; Kjetil Søreide (2018). Systematic review of epidemiology, presentation, and management of Meckel's diverticulum in the 21st century. (external link)
• Thomas M. Drake; Stephen R. Knight; Ewen M. Harrison et al. (2018). Global inequities in precision medicine and molecular cancer research. (external link)

Conference abstract

• Marcus Thomas Thor Roalsø; Celine Oanæs; Herish Garresori et al. (2026). ASO Visual Abstract: Combined Impact of Neoadjuvant Therapy and Preoperative Cachexia on Patients Undergoing Pancreatoduodenectomy: Is There a "Double Jeopardy"? A National Cohort Study Investigating the Association with Short- and Long-Term Outcomes. (external link)
• Hilde Farstad; Kjetil Søreide; Tom Birger Glomsaker et al. (2009). Acute appendicitis in the era of laparoscopy: The clinical management is influenced by age and gender. (external link)
• Bjørn Steinar Olden Nedrebø; Kjetil Søreide; Morten Tandberg Eriksen et al. (2010). COMPARISON OF RELATIVE SURVIVAL IN RIGHT- AND LEFT SIDED ADENOCARCINOMA OF THE COLON IN A NATIONAL COHORT STUDY. (external link)
• Tom Birger Glomsaker; Kjetil Søreide; Lars Aabakken et al. (2009). ERCP - Complications and patient satisfaction. Preliminary data from the Norwegian ERCP-registry in the"Gastronett" network. (external link)

Letter to the editor

• Arezo Kanani; Kjetil Søreide (2025). Total neoadjuvant therapy with immunotherapy in locally advanced rectal cancer. (external link)
• Kjetil Søreide (2020). Regionalization of Pancreatectomy for Pancreatic Cancer. (external link)
• Kjetil Søreide (2018). Damage to the Gastrointestinal Tract From Nonsteroidal Anti-Inflammatory Drugs: What About Perforations and the Healing Intestine?. (external link)
• Kjetil Søreide (2019). Emergency general surgery - is there any value in a '100 most cited' list?. (external link)
• Kjetil Søreide; Stefan Stättner; Julie Hallet (2024). Role of Laparoscopy in Small-Bowel Neuroendocrine Tumors – the Jury is Still Out. (external link)
• Andreas J. Krüger; Kjetil Søreide (2008). Trimodal temporal distribution of fatal trauma - Fact or fiction?. (external link)
• Kjetil Søreide; Bjørn Gunnar Nedrebø; Jon Arne Søreide et al. (2010). Association With a High Number of Lymph Nodes and Microsatellite Instability in Colorectal Cancer. (external link)
• Kjetil Søreide; Morten Vetrhus; Clemens Weber (2017). Etikk og estetikk ved prehospital torakotomi. (external link)
• Kjetil Søreide (2011). Snapshot Quiz 11/04 (Br J Surg 2011; 98: 865, 888). (external link)
• Jon Narvestad; Kjetil Søreide (2015). Routine whole-body computed tomography in major trauma resuscitation: From "donut of death" to "do not without"?. (external link)
• Kjetil Søreide (2010). Epidemiology of Trauma Deaths: Location, Location, Location!. (external link)
• Christian Rushfeldt; Kjetil Søreide (2010). C. Rushfeldt & K. Søreide svarer. (external link)
• Kjetil Søreide; Benedicte Skjold-Ødegaard; Kenneth Thorsen et al. (2021). Adhesions after open and laparoscopic abdominal surgery. (external link)
• Kjetil Søreide; Andreas Reite (2009). Untitled. (external link)
• Kjetil Søreide (2009). Sensitivity and specificity in diagnostic accuracy: ROC solid or lost in translation?. (external link)
• Stephen Tabiri; Sivesh K. Kamarajah; Dmitri Nepogodiev et al. (2021). Impact of Bacillus Calmette-Gue´rin (BCG) vaccination on postoperative mortality in patients with perioperative SARS-CoV-2 infection. (external link)
• Kjetil Søreide; Linn Såve Nymo; Kristoffer Lassen (2019). Centralization of Pancreatic Surgery in Europe: an Update. (external link)
• William A. Cambridge; Cameron Fairfield; James J. Powell et al. (2021). Response to the Comment on "meta-analysis and Meta-regression of Survival after Liver Transplantation for Unresectable Perihilar Cholangiocarcinoma". (external link)
• Kjetil Søreide (2011). Lymph Node Evaluation for Colon Cancer. (external link)
• Kjetil Søreide; Shuji Ogino (2012). Microsatellite instability and retrieval of lymph nodes in stage III colon cancer: harbinger or hermit?. (external link)
• Kjetil Søreide (2018). Assessing Surgeons' Technical Performance and Effect on Outcomes: Still Early Days. (external link)
• Kjetil Søreide (2015). Sepsis drives the cost in perforated peptic ulcer. (external link)
• Kjetil Søreide (2015). Enhanced recovery in emergency surgery: Validity and generalizability of a randomized trial. (external link)
• Kjetil Søreide (2025). Measuring the quality of surgery: should textbook outcomes be an off-the-shelf or a bespoke metric?. (external link)

Editorial/Leader article

• Kjetil Søreide (2025). Patient-derived organoids from EUS-guided biopsies in pancreatic cancer: moving the needle for precision medicine. (external link)
• Kjetil Søreide; Patrik Larsson; Sanjay Pandanaboyana (2024). Surgical Complications After Neoadjuvant Treatment for Borderline Resectable Pancreatic Cancer: From Benchmarks to Randomized Clinical Trials. (external link)
• Kjetil Søreide; Ajith K. Siriwardena; Isabella Frigerio et al. (2024). Building the next generation of HPB surgeons: E-AHPBA Early Career Group, Online Academy, Mentorship Program, and Fellowships. (external link)
• Anders Bergenfelz; Kjetil Søreide (2014). Improving outcomes in emergency surgery. (external link)
• Kjetil Søreide; Ernesto Sparrelid (2024). Defining what is left in a left-sided pancreatectomy. (external link)
• Kjetil Søreide (2018). Sweet Predictions Speak Volumes for Early Detection of Pancreatic Cancer. (external link)
• Kjetil Søreide; Malin Sund (2017). Translational research in surgical oncology. (external link)
• Kjetil Søreide (2007). Molecular testing for microsatellite instability and DNA mismatch repair defects in hereditary and sporadic colorectal cancers - Ready for prime time?. (external link)
• Kjetil Søreide (2015). The research conundrum of acute appendicitis.. (external link)
• Kjetil Søreide (2023). Burgeoning rise in intraductal papillary mucinous neoplasia (IMPN)–a blessing in disguise. (external link)
• Kjetil Søreide; S. George Barreto; Sanjay Pandanaboyana (2024). Severe acute pancreatitis. (external link)
• Kjetil Søreide; Niels F.M. Kok (2024). Curative-intent ablation margins (A0) for colorectal liver metastasis: more burning questions. (external link)
• Kjetil Søreide (2017). Task-Shifting in Surveillance after Surgery for Colorectal Cancer: Addressing the Right Question?. (external link)
• Kjetil Søreide (2017). Gallstone Disease and Cancer Risk: Finding the Bug in the System. (external link)
• Kjetil Søreide (2011). The role of high-mobility group box-1 (HMGB-1) in the management of suspected acute appendicitis: useful diagnostic biomarker or just another blind alley?. (external link)
• Julie Hallet; Kjetil Søreide (2024). Neoadjuvant therapy with peptide receptor radionuclide therapy for pancreatic neuroendocrine tumours. (external link)
• Kjetil Søreide; D Story; Bernard Walder (2016). Perioperative medicine and mortality after elective and emergency surgery.. (external link)
• Kjetil Søreide (2016). Resection of asymptomatic primary tumour in unresectable stage IV colorectal cancer: time to move on from propensity matched scores to randomized controlled trials. (external link)
• Kjetil Søreide; Bas P.L. Wijnhoven (2016). Surgery for an ageing population.. (external link)
• Kjetil Søreide (2012). Strengthening the trauma chain of survival. (external link)
• Kjetil Søreide (2015). Pancreas injury: the good, the bad and the ugly. (external link)
• Kjetil Søreide (2015). Emergency surgery over 111 years: are we still at a crossroads or ready for emergency surgery 2.0?. (external link)
• Kjetil Søreide (2015). Blood transfusion in liver surgery for colorectal metastasis: Time for triggers and trials. (external link)
• Kjetil Søreide (2015). Service as joint editor-in-chief for 11 years comes to an end: adieu, godspeed and auf wiedersehn!. (external link)
• Kjetil Søreide (2012). Strengthening the trauma chain of survival. (external link)
• Kjetil Søreide (2021). Medical students in the operating room: A two-way street for teaching and learning. (external link)
• Kjetil Søreide (2018). Pylorusstenose hos spedbarn. (external link)
• Kjetil Søreide; Jon Narvestad (2014). Computed tomography to detect life-threatening injuries in trauma: Can we (and should we) add in patients' preferences?. (external link)
• Benedicte Skjold-Ødegaard; Kjetil Søreide (2020). Competency-based surgical training and entrusted professional activities– perfect match or a Procrustean bed?. (external link)
• Kjetil Søreide (2024). Major Hepatectomy for Perihilar Cholangiocarcinoma: Taking Sides. (external link)
• Kjetil Søreide (2009). Epidemiology of major trauma. (external link)
• Kjetil Søreide; Hans Morten Lossius; HM Lossius (2009). A year of contemplation: looking back and moving forward. (external link)
• Johannes Wiik Larsen; Kjetil Søreide (2019). The worldwide variation in epidemiology of pancreatic injuries. (external link)
• Kjetil Søreide (2022). Surgical exploration with non-resection in the setting of resectable, borderline and locally advanced pancreatic cancer. (external link)
• Tom B. Glomsaker; Kjetil Søreide (2009). Surgical training and working time restriction. (external link)
• Kjetil Søreide (2013). Emergency management of acute obstructed left-sided colon cancer: loops, stents or tubes?. (external link)
• Kjetil Søreide (2015). Editorial: facts, figures and the future. (external link)
• Kjetil Søreide (2009). Trauma and the acute care surgery model - should it embrace or replace general surgery?. (external link)
• Kjetil Søreide; Oddvar Mathias Sandvik; Jon Arne Søreide (2014). KRAS mutation in patients undergoing hepatic resection for colorectal liver metastasis: A biomarker of cancer biology or a byproduct of patient selection?. (external link)
• Benedicte Skjold-Ødegaard; Kjetil Søreide (2020). Standardization in surgery: friend or foe?. (external link)
• Kjetil Søreide; Ewen M. Harrison; Stephen J. Wigmore (2018). Research gaps and unanswered questions in gallbladder cancer. (external link)
• Kjetil Søreide (2023). Liver transplantation for non-resectable colorectal liver metastases: the thin red line. (external link)
• Patrik Larsson; Kjetil Søreide (2024). Surgery for oligometastatic pancreatic cancer: next frontier?. (external link)
• William Torén; Daniel Ansari; Kjetil Søreide et al. (2020). Re-resection for incidentally detected gallbladder cancer: Weighing in on the options. (external link)
• Kjetil G. Ringdal; Hans Morten Lossius; Kjetil Søreide (2009). "Getting your message through" an editorial guide for meeting publication standards. (external link)
• Torhild Veen; Kjetil Søreide (2017). Can molecular biomarkers replace a clinical risk score for resectable colorectal liver metastasis?. (external link)
• Kjetil Søreide (2018). Modellsykdom for målrettet kreftbehandling. (external link)
• Marianne Berg; Kjetil Søreide (2011). PREVENTION Will an aspirin a day keep the colorectal cancer away?. (external link)
• Hans Morten Lossius; Kjetil Søreide (2011). Open access publishing: a girder in the success of the Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. (external link)

Professional article

• Ajith K. Siriwardena; Alejandro Serrablo; Åsmund Avdem Fretland et al. (2023). The multi-societal European consensus on the terminology, diagnosis and management of patients with synchronous colorectal cancer and liver metastases: an E-AHPBA consensus in partnership with ESSO, ESCP, ESGAR, and CIRSE. (external link)
• Ajith K. Siriwardena; Alejandro Serrablo; Åsmund Avdem Fretland et al. (2023). Multisocietal European consensus on the terminology, diagnosis, and management of patients with synchronous colorectal cancer and liver metastases: an E-AHPBA consensus in partnership with ESSO, ESCP, ESGAR, and CIRSE. (external link)

Journal corrigendum

• Massimo Sartelli; DG Weber; E Ruppe et al. (2017). Erratum: Antimicrobials: A global alliance for optimizing their rational use in intra-abdominal infections (AGORA). [World J Emerg Surg. 11, (2016) (33)] DOI: 10.1186/s13017-016-0089-y. (external link)
• Massimo Sartelli; A Chichom-Mefire; FM Labricciosa et al. (2017). Erratum: The management of intra-abdominal infections from a global perspective: 2017 WSES guidelines for management of intra-abdominal infections. [World J Emerg Surg. 12, (2017) (29)] DOI: 10.1186/s13017-017-0141-6. (external link)
• Floris M. Thunnissen; Daan J. Comes; Carmen S.S. Latenstein et al. (2023). Corrigendum to ‘A mixed-methods study to define Textbook Outcome for the treatment of patients with uncomplicated symptomatic gallstone disease with hospital variation analyses in Dutch trial data’ [Volume 25, Issue 9, September 2023, Pages 1000–1010] (HPB (2023) 25(9) (1000–1010), (S1365182X23001557), (10.1016/j.hpb.2023.05.005)). (external link)
• Marco Ceresoli; Michele Pisano; Fikri Abu-Zidan et al. (2022). Correction: Minimally invasive surgery in emergency surgery: a WSES survey (World Journal of Emergency Surgery, (2022), 17, 1, (18), 10.1186/s13017-022-00419-x). (external link)
• Abdelnour Alhourani; Tia Tidwell; Ansooya Avinash Bokil et al. (2022). Author Correction: Metformin treatment response is dependent on glucose growth conditions and metabolic phenotype in colorectal cancer cells (Scientific Reports, (2021), 11, 1, (10487), 10.1038/s41598-021-89861-6). (external link)
• Arezo Kanani; Torhild Veen; Dordi Lea et al. (2025). Correction to: Neoadjuvant Immunotherapy Followed by Surgery Compared with Upfront Surgery Alone in Operable Colon Cancer with Deficient Mismatch Repair: Modeling Oncological Outcomes and Numbers Needed to Treat (Annals of Surgical Oncology, (2024), 10.1245/s10434-024-16755-y). (external link)
• Aneel Bhangu; Kjetil Søreide; Salomone Di Saverio et al. (2017). Erratum: Acute appendicitis: modern understanding of pathogenesis, diagnosis, and management (The Lancet (2015) 386(10000) (1278–1287) (S0140673615002755) (10.1016/S0140-6736(15)00275-5)). (external link)

Conference poster

• Satu Oltedal; Hartwig Kørner; Ole Gunnar Aasprong et al. (2017). The Prognostic Relevance of Sentinel Lymph Node Metastases Assessed by PHGR1 mRNA Quantitation in Stage I-III Colon Cancer. (external link)
• Hartwig Kørner; Marianne Guren; Jon Arne Søreide et al. (2019). Non-curative treatment of patients with colorectal cancer – a national cohort study. (external link)

Media feature article

• Kjetil Søreide (2016). The SSO/ESSO International Career Development Exchange Program: Experience from MD Anderson Cancer Center and Massachusetts General Hospital. (external link)
• Airazat M. Kazaryan; Lars Lohne Eftang; Pål Ødegaard et al. (2022). Appendisittbehandlingen bør standardiseres. (external link)

Conference lecture

• Hanne Røland Hagland; Kjetil Søreide; Dordi Lea et al. (2017). Correlation of circulating T-cells in pre-operative blood to intratumoral density and location of CD3+ and CD8+ T-cells in colorectal cancer: a potential for an immunoscore by “liquid biopsy”?. (external link)
• Joakim Stray Andreassen; David Andreas Thomas Werner; Kenneth Thorsen et al. (2022). The effects of reduced clinical activity on mortality in moderate and severe traumatic brain injury – an observational cohort study. (external link)

Popular science article

• Kjetil Søreide (2012). EGFR and downstream genetic alterations in KRAS/BRAF and PI3K/AKT pathways in colorectal cancer: implications for targeted therapy. (external link)

Textbook

• Kjetil Søreide (2012). The Epidemiology of Injury in Bungee Jumping, BASE Jumping, and Skydiving. (external link)

Academic book chapter

• Martin Matthew Christian Watson; Mark van der Giezen; Kjetil Søreide (2023). Gut microbiome influence on human epigenetics, health, and sisease. (external link)
• Marcus Thomas Thor Roalsø; Øyvind Hald; Daniel Ansari et al. (2021). The Role of Epigenetics in Pancreatic Ductal Adenocarcinoma. (external link)
• Marcus Thomas Thor Roalsø; Kjetil Søreide (2021). TNM Staging for Pancreatic Adenocarcinoma. (external link)

Non-fiction monograph

• Kjetil Søreide; Stefan Stättner (2021). Textbook of Pancreatic Cancer. (external link)

See a complete overview of publications in NVA.