Seit 2009
Stellvertretender Chefarzt Klinik für Allgemeinchirurgie
Universitätsspital Basel (Prof. Oertli)

Seit 1.9.2003
Leitender Arzt Klinik für Allgemeinchirurgie
Universitätsspital Basel (Prof. Oertli)

2009
Ernennung zum Titularprofessor der Universität Basel

2004 
Umhabilitierung an die Medizinische Fakultät der Universität Basel

2002
Habilitation  «Die isolierte Extremitätenperfusion mit Tumornekrosefaktor und Melphalan beim lokoregionär metastasierten Melanom und bei fortgeschrittenen Weichgewebssarkomen», Medizinische Fakultät Charité der Humboldt Universität Berlin

2002
Facharztprüfung Schwerpunktbezeichnung Viszeralchirurgie

1994 -1995 und 1996-1997
Abteilung für Unfall- und Wiederherstellungschirurgie
Charité Campus Virchow-Klinikum, Humboldt Universität zu Berlin (Prof. Haas)

1992-2003
Abteilung für Chirurgie und Chirurgische Onkologie
Robert Rössle-Klinik, Charité Campus Buch, Humboldt Universität zu Berlin (Prof. Schlag)

1987-1991
Chirurgische Universitätsklinik Heidelberg (Prof. Herfarth)
Rotation in Kinderchirurgie und KH Salem, Heidelberg

1986-1987
Abteilung Chirurgie, Bundeswehrkrankenhaus Ulm (Prof. Hartl)

1997
Facharztprüfung Schwerpunktbezeichnung Unfallchirurgie 

1995
Arzt für Chirurgie  

1991/92
Forschungsaufenthalt  Laboratory of Oncology and Experimental  Surgery (L.O.C.E.)
Institut Jules Bordet in Brüssel, Belgien bei Prof. F. Lejeune. 
Forschungsstipendium der Deutschen Krebshilfe

• Staubli SM, Kettelhack C, Oertli D, von Holzen U, Zingg U, Mattiello D, Rosenberg R, Mechera R, Rosenblum I, Pfefferkorn U, Kollmar O, Nebiker CA: Efficacy of intraoperative cholangiography versus preoperative 38 Jahresbericht Publikationen St. Claraspital 2022 magnetic resonance cholangiography in patients with intermediate risk for common bile duct stones. 2022: HPB: the official journal of  the International Hepato Pancreat Biliary Association 24: 1898–1906.
• Haak F, Soysal S, Deutschmann E, Moffa G, Bucher HC, Kaech M, Kettelhack C, Kollmar O, von Strauss und Torney M: Incidence of Liver Resection Following the Introduction of Caseload Requirements for Liver Surgery in Switzerland. 2022: World journal of surgery 46: 1457–1464.
• Willburger JCF, von Strauss M, Peterson CJ, Glass TR, Kettelhack C: Incidence, Treatment and Outcome of Patients with Retroperitoneal Soft-Tissue Sarcoma in Switzerland 2005–2015: A Population-Based Analysis. 2022: World journal of surgery 46: 461–468.
• Ramser M, Warschkow R, Viehl CT, Kettelhack C, Zettl A, Lobbes LA, Zuber M, Weixler B: The Simultaneous Presence of Isolated Tumour Cells and Bone Marrow Micrometastases in Stage I and II Colon Cancer – Challenging the Theory of a Chronological Pathway of Tumour Cell Dissemination. 2022: World journal of surgery 46: 680–689.
• Weixler B, Ramser M, Warschkow R, Viehl CT, Vaughan-Shaw PG, Zettl A, Kettelhack C, Zuber M: The value of sentinel node mapping for the staging of node-negative colon cancer. Propensity score and mediation analyses. 2021: Annals of surgery open 3.
• Ramser M, Lobbes LA, Warschkow R, Viehl CT, Lauscher JC, Droeser RA, Kettelhack C, Zuber M, Weixler B: Evaluation of the prognostic relevance of the recommended minimum number of lymph nodes in colorectal cancer – a propensity score analysis. 2021: International journal of colorectal disease 36: 779–789.
• Däster S, Eppenberger-Castori S, Mele V, Schäfer HM, Schmid L, Weixler B, Soysal SD, Droeser RA, Spagnoli GC, Kettelhack C, Oertli D, Terracciano L, Tornillo L, von Holzen U: Low Expression of Programmed Death 1 (PD-1), PD-1 Ligand 1 (PD-L1), and Low CD8+ T Lymphocyte Infiltration Identify a Subgroup of Patients With Gastric and Esophageal Adenocarcinoma With Severe Prognosis. Front Med (Lausanne). 2020 Apr 28; 7: 144
• von Holzen U, Schmidt S, Hayoz S, Steffen T, Grieder F, Bartsch D, Schnider A, Knoefel WT, Piessen G, Kettelhack C, Marti WR, Schäfer M, Függer R, Königsrainer A, Gloor B, Furrer M, Gérard MA, Hawle H, Walz MK, Alesina P, Ruhstaller T: Surgical Outcomes After Neoadjuvant Chemoradiation Followed by Curative Surgery in Patients with Esophageal Cancer: An Intergroup Phase lll Trial of the Swiss Group for Clinical Cancer Research (SAKK 75/08), the German Esophageal Cancer Study Group, the Austrian Arbeitsgemeinschaft Medikamentöse Tumortherapie (AGMT), and the Fédération Francophone de Cancérologie Digestive (FFCD)/Fédération de Recherche en Chirurgie (FRENCH). Ann Surg. 2020 Aug 26
• von Strauss und Torney M, Moffa G, Kaech M, Haak F, Riss S, Deutschmann E, Bucher HC, Kettelhack C, Paterson HM: Risk of Emergency Surgery or Death After Initial Nonoperative Management of Complicated Diverticulitis in Scotland and Switzerland. JAMA Surg. 2020 Jul 1; 155(7): 600–606
• Roth JA, Schwab C, Atkinson A, von Flüe M, Kettelhack C, Eckstein FS, Battegay M, Klimke S, Frei R, Widmer AF. Are three antiseptic paints needed for safe preparation of the surgical field? A prospective cohort study with 239 patients. Antimicrob Resist Infect Control. 2020 Jul 31;9(1):120. doi: 10.1186/s13756-020-00780-z. PMID: 32736650
• Tampakis A, Weixler B, Rast S, Tampaki EC, Cremonesi E, Kancherla, Tosti N, Kettelhack C, Ng KYC, Delko T, Soysal SD, von Holzen U, Tornillo L; Luigi Terracciano, Eppenberger-Castori S, Spagnoli G, Piscuoglio S, von Flüe M, Däster S, Droeser R; Nestin and CD34 expression in colorectal cancer predicts beneficial survival by modulating a hypoxia mediated favorable immune response. Cellular Oncology 2019.
• Steffen T, Putora PM, Hübner M, Gloor B, Lehmann K, Kettelhack C, Adamina M, Peterli R, Schmidt J, Ris F, Glatzer M; Diagnostic Nodes of Patient Selection for Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy Among Colorectal Cancer Patients: A Swiss National Multicenter Survey.Clin Colorectal Cancer. 2019 Jun 26.

• Willburger JCF, Kettelhack C, Fuchs B, Schaefer DJ, Osinga R. Giant myxoid liposarcoma of the gluteal region: case report of patient caused delay of surgical treatment and review of the literature. J Surg Case Rep. 2018 Oct 8;2018(10):rjy265. doi: 10.1093/jscr/rjy265. eCollection 2018 Oct. PubMed PMID: 30310650; PubMed Central PMCID: PMC6174623.

• Marti WR, Curti G, Wehrli H, Grieder F, Graf M, Gloor B, Zuber M, Demartines N, Fasolini F, Lerf B, Kettelhack C, Andrieu C, Bigler M, Hayoz S, Ribi K, Hamel  C; Swiss Group for Clinical Cancer Research (SAKK), Section Surgery. Clinical Outcome After Rectal Replacement With Side-to-End, Colon-J-Pouch, or Straight Colorectal Anastomosis Following Total Mesorectal Excision: A Swiss Prospective,  Randomized, Multicenter Trial (SAKK 40/04). Ann Surg. 2018 Sep 24. doi: 10.1097/SLA.0000000000003057. [Epub ahead of print] PubMed PMID: 30252681.

• Juchler F, Roth JA, Schweiger A, Dangel M, Gugliotta M, Battegay M, Eckstein FS, Kettelhack C, Abshagen C, Hug BL, Boyce JM, Widmer AF. Costs versus earnings in colon surgery and coronary artery bypass grafting under a prospective payment  system: Sufficient financial incentives to reduce surgical site infections? Infect Control Hosp Epidemiol. 2018 Oct;39(10):1246-1249. doi: 10.1017/ice.2018.179. Epub 2018 Aug 22. PubMed PMID: 30131085.

• 2015 European Society of Coloproctology Collaborating Group. The impact of stapling technique and surgeon specialism on anastomotic failure after right-sided colorectal resection: an international multicentre, prospective udit. Colorectal Dis. 2018 Nov;20(11):1028-1040. doi: 10.1111/codi.14308. Epub 2018 Jul 12. PubMed PMID: 29920945.

• von Strauss Und Torney M, Aghlmandi S, Zeindler J, Nowakowski D, Nebiker CA, Kettelhack C, Rosenthal R, Droeser RA, Soysal SD, Hoffmann H, Mechera R. High-resolution standardization reduces delay due to workflow disruptions in laparoscopic cholecystectomy. Surg Endosc. 2018 Dec;32(12):4763-4771. doi: 10.1007/s00464-018-6224-y. Epub 2018 May 21. PubMed PMID: 29785458.

• Kasper B, Baumgarten C, Garcia J, Bonvalot S, Haas R, Haller F, Hohenberger P, Penel N, Messiou C, van der Graaf WT, Gronchi A; Desmoid Working Group . An update on the management of sporadic desmoid-type fibromatosis: a European Consensus Initiative between Sarcoma PAtients EuroNet (SPAEN) and European Organization for Research and Treatment of Cancer (EORTC)/Soft Tissue and Bone Sarcoma Group (STBSG). Ann Oncol. 2017 Oct 1;28(10):2399-2408. doi: 10.1093/annonc/mdx323. Review. PubMed PMID: 28961825; PubMed Central PMCID: PMC5834048.

• Weixler B, Renetseder F, Facile I, Tosti N, Cremonesi E, Tampakis A, Delko T,  Eppenberger-Castori S, Tzankov A, Iezzi G, Kettelhack C, Soysal SD, von Holzen U, Spagnoli GC, Terracciano L, Tornillo L, Droeser RA, Däster S. Phosphorylated CXCR4 expression has a positive prognostic impact in colorectal cancer. Cell Oncol (Dordr). 2017 Dec;40(6):609-619. doi: 10.1007/s13402-017-0348-2. Epub 2017  Sep 21. PubMed PMID: 28936810.

• 2015 European Society of Coloproctology collaborating group. Risk factors for unfavourable postoperative outcome in patients with Crohn's disease undergoing right hemicolectomy or ileocaecal resection An international audit by ESCP and S-ECCO. Colorectal Dis. 2017 Sep 15. doi: 10.1111/codi.13889. [Epub ahead of print] PubMed PMID: 28913968.

• Steffen T, Dietrich D, Schnider A, Kettelhack C, Huber O, Marti WR, Furrer M, Gloor B, Schiesser M, Thierstein S, Brauchli P, Ruhstaller T; Swiss Group for Clinical Cancer Research (SAKK). Recurrence Patterns and Long-Term Results After Induction Chemotherapy, Chemoradiotherapy, and Curative Surgery in Patients With Locally Advanced Esophageal Cancer. Ann Surg. 2017 Jul 24. doi: 10.1097/SLA.0000000000002435. [Epub ahead of print] PubMed PMID: 28742685.

• Hoffmann H, Delko T, Kirchhoff P, Rosenthal R, Schäfer J, Kraljević M, Kettelhack C. Colon Perfusion Patterns During Colorectal Resection Using Visible Light Spectroscopy. World J Surg. 2017 Nov;41(11):2923-2932. doi: 10.1007/s00268-017-4100-x. PubMed PMID: 28717916.
• von Strauss Und Torney M, Thommen S, Dell-Kuster S, Hoffmann H, Rosenthal R, Young J, Kettelhack C. Surgical treatment of uncomplicated diverticulitis in Switzerland: comparison of population-based data over two time periods. Colorectal Dis. 2017 Sep;19(9):840-850. doi: 10.1111/codi.13670. PubMed PMID: 28371339.
• 2015 European Society of Coloproctology collaborating group. The relationship between method of anastomosis and anastomotic failure after right hemicolectomy and ileo-caecal resection: an international snapshot audit. Colorectal Dis. 2017  Mar 6. doi: 10.1111/codi.13646. [Epub ahead of print] PubMed PMID: 28263043.
• Hess GF, Schäfer J, Rosenthal R, Kettelhack C, Oertli D. Reversal after Hartmann's procedure in patients with complicated sigmoid diverticulitis. Colorectal Dis. 2017 Jun;19(6):582-588. doi: 10.1111/codi.13553. PubMed PMID: 27805772.