Seit 2024    
Stv. Leiter Allgemeine Chirurgie Clarunis Universitäres Bauchzentrum Basel

Seit 2024    
Stv. Oberarzt Viszeralchirurgie Clarunis Universitäres Bauchzentrum Basel
Standort Universitätsspital Basel

2022-2023    
Klinisches Fellowship in Upper Gastrointestinal und Colorectal Surgery
Frimley Park Hospital, United Kingdom

2022    
FMH Chirurgie

2021-2022    
Forschungsaufenthalt Departement Biomedizin Universität Basel

2021   
Young Oncology Academy SAKK 

2018-2021    
Assistenzarzt Viszeralchirurgie Clarunis Universitäres Bauchzentrum Basel

2017    
Promotion Medizinische Fakultät Universität Basel

2016-2018     
Assistenzarzt Chirurgie Spitalzentrum Biel 

2015-2016    
Assistenzarzt Innere Medizin Bürgerspital Solothurn 

2014    
Staatsexamen Universität Basel

• Hess GF, Nocera F, Taha-Mehlitz S, Christen S, von Strauss und Torney M, Steinemann DC. Mesh-associated complications in minimally invasive ventral mesh rectopexy: a systematic review. Surg Endosc 2024.
• Hess GF, Aegerter NLE, Zeindler J, Vosbeck J, Neuschütz KJ, Müller PC, Muesnt S, Däster S, Bolli M, Kollmar O, Soysal SD. Impact of Positive Lymph Nodes after Systematic Perihilar Lymphadenectomy in Colorectal Liver Metastases. J Clin Med 2024.
• Stegmann A, Scamardi K, Vosbeck J, Soysal SD; Kollmar O, Hess GF. Peribiliary cysts in a normal liver: Case report and review of the literature. Open J Clin Med Case Rep 2024.
• Aegerter NLE, Kümmerli C, Just A, Girard T, Bandschapp O, Soysal SD, Hess GF, Müller-Stich BP, Müller PC, Kollmar O. Extent of resection and underlying liver disease influence the accuracy of the preoperative risk assessment with the ACS NSQIP Risk Calculator. J Gastrointest Surg 2024. 
• Zeindler J, Hess GF, von Heesen M, Aegerter NLE, Reber C, Schmittt AM, Muenst S, Bolli M, Soysal SD, Kollmar O. Anatomic versus non-anatomic liver resection for hepatocellular carcinoma-A European multicentre cohort study in cirrhotic and non-cirrhotic patients. Cancer Med 2024
• Haak F, Hess GF, Sedlaczek Ph, Soysal SD, Vosbeck J, Piscuoglio S, Coto-Llerena M, Kollmar O. A Hepatocellular Cancer Patient-derived Organoid Xenograft Model to Investigate Impact of Liver Regeneration on Tumor Growth. J Vis Exp. 2024.
• Kümmerli C, Hess V, Dutkowski Ph, Sinz S, Kessler U, Hess GF, Billeter AT, Müller-Stich BP, Kollmar O, Müller PC. Hepatic Artery Infusion Chemotherapy for Primary and Secondary Malignancies of the Liver: State of the Art and Current High-Level Evidence. Pharmacology 2024
• STARSurg Collaborative; EuroSurg Collaborative. Association between multimorbidity and postoperative mortality in patients undergoing major surgery: a prospective study in 29 countries across Europe. Anaesthesia 2024.
• STARSurg Collaborative; EuroSurg Collaborative. Impact of postoperative cardiovascular complications on 30-day mortality after major abdominal surgery: an international prospective cohort study. Anaesthesia 2024.
• Hess GF, Sedlaczek P, Zeindler J, Muenst S, Schmitt AM, Däster S, Bolli M, Kollmar O, Soysal SD. The short‑ and long‑term outcome after the surgical management of common bile duct stones in a tertiary referral hospital. Langenbecks 2023.
• Greijdanus et al. TENTACLE-Rectum Collaborative Group (Hess GF) Stoma-free Survival After Rectal Cancer Resection With Anastomotic Leakage: Development and Validation of a Prediction Model in a Large International Cohort. Annals of Surgery 2023.
• Garner LC, Amini A, Fitzpatrick MEB, Lett MJ, Hess GF, Filipowicz Sinnreich M, Provine NM, Klenerman P. Single-cell analysis of human MAIT cell transcriptional, functional and clonal diversity. Nat Immunology 2023.
• Haak F, Di Tommaso L, Viganò L, Akpinar R, De Carlo C, Renne S, Hess G, et al. A Transcriptomic Signature of Intrahepatic Cholangiocellular Carcinoma with Very Early Recurrence: Identifying Patients at Risk and Finding a Personalized Adjuvant Therapy. Eur J Surg Oncol 2023.
• Ercan C, Coto-Llerena M, Gallon J, Fourie L, Marinucci M, Hess GF, Vosbeck J, Taha-Mehlitz S, Boldanova T, Meier MA, Tzankov A, Matter MS, Hoffmann MHK, Di Tommaso L, von Flüe M, Ng CKY, Heim MH, Soysal SD, Terracciano LM, Kollmar O, Piscuoglio S. Genomic analysis of focal nodular hyperplasia with associated hepatoce.llular carcinoma unveils its malignant potential: a case report Commun Med (Lond) 2022
• NIHR Global Health Unit on Global Surgery; COVIDSurg Collaborative (Hess GF). Elective surgery system strengthening development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries. Lancet 2022.
• Staubli SM, Maloca P, Kuemmerli C, Kunz J, Dirnberger A, Allemann A, Gehweiler J, Soysal SD, Droeser RA, Däster S, Hess GF, Raptis D, Kollmar O, von Flüe M, Bolli M, Cattin Ph. Magnetic resonance cholangiopancreatography enhanced by virtual reality as a novel tool to improve the understanding of biliary anatomy and the teaching of surgical trainees. Frontiers in Surgery 2022.
• Korenblik R. et al (Hess GF) Dragon 1 Protocol Manuscript: Training, Accreditation, Implementation and Safety Evaluation of Portal and Hepatic Vein Embolization (PVE/HVE) to Accelerate Future Liver Remnant (FLR) Hypertrophy. Cardiovasc Intervent Radiol 2022.
• Zanotti S, Boot GF, Coto-Llerena M, Gallon J, Hess GF, Soysal SD, Kollmar O, Ng CKY, Piscuoglio S. The role of chronic liver diseases in the emergence and recurrence of hepatocellular carcinoma: an omics perspective. Frontiers in Medicine 2022 
• Hess GF, Grochola LF. ESMO / E-AHPBA: Highlights Lower Gastrointestinal Cancer. Leading Opinions Haematology & Oncology 08/2021.
• Hess GF, Sedlaczek P, Haak F, Staubli SM, Muenst S, Bolli M, Zech CJ, Hoffman M, Mechera R, Kollmar O, Soysal SD. Persistent acute cholecystitis after cholecystostomy – increased mortality due to treatment approach? HPB. 2021
• Hess GF, Soysal SD, Nicolas G, Bolli M, Zech C, Tzankov A, Christ E, Montemurro M, Kollmar O. Surgical strategy based on radiological 3D-reconstruction in a giant metastatic neuroendocrine tumor of the pancreas – a case report of an interdisciplinary approach. Case Rep Surg. 2021
• Hess GF, Menter T, Boll D, Steiger J, von Strauss und Torney M. EBV-associated mucocutaneous ulcer, a rare cause of a frequent problem. J Surg Case Rep. 2020
• Hess GF, Soysal SD, Matter MS, Boldanova T, Kollmar O. Liver fibrosis with FNH or HCC in men - a controversy topic. Ann Case Report. 2020
• Hess GF, Glatz K, Rothschild SI, Kollmar O, Soysal SD, Boll DT, Droeser RA, Mechera R. Malignant melanoma metastasis in the gallbladder. A case report of an unusual metastatic site. Int J Surg Case Rep. 2020
• Hess GF, Terracciano L, Heim M, Soysal SD, Kollmar O. Hepatectomy of a Hepatocellular Carcinoma after SIRT in a Cirrhotic Liver. Arch Surg Clin Case Rep. 2020
• Varathan N, Hess G, Nocera F, Lazaridis I and Posabella A. Intraabdominal abscess after cholecystectomy: Do not forget the stones. Integrative Clinical Medicine. 2019
• Hess GF, Schäfer J, Rosenthal R, Kettelhack C, Oertli D. Reversal after Hartmann’s Procedure in Patients with Complicated Sigmoid Diverticulitis. Colorectal Dis. 2017