Dr. med. Konstantinos Zarras
Chefarzt

Qualifikation

• Facharzt für Chirurgie
• Facharzt für Viszeralchirurgie
• Fellow of the European Board of Surgery – Abdominal Wall Surgery (Hon. FEBS-AWS)

Leiter zertifizierter Zentren:

• Leiter des Zertifizierten Darmkrebszentrums (DKG)
• Leiter des Zertifizierten Referenzzentrums Minimalinvasive Chirurgie
• Leiter des Zertifizierten Referenzzentrums Hernienchirurgie

Spezialgebiete

• Minimal-invasive und robotisch-assistierte Chirurgie (da Vinci)
• Onkologische Viszeralchirurgie: Darm-, Magen-, Pankreas- und Leberchirurgie
• Hernienchirurgie – Bauchdecken-, Leisten- und Narbenhernien
• Antirefluxchirurgie und Zwerchfellhernien
• Darmkrebszentrum (DKG-zertifiziert)
• Wechsel- und Revisionseingriffe nach Voroperationen

Beruflicher Werdegang

• Medizinstudium an den Universitäten Bochum und Düsseldorf | 1992: Staatsexamen
• 1992–1999: Chirurgische Weiterbildung, Klinik für Chirurgie, Marien Hospital Düsseldorf
• 1996: Promotion
• 1999: Facharzt für Chirurgie, Marien Hospital Düsseldorf
• 1999: Oberarzt, Marien Hospital Düsseldorf
• 2003: Facharzt für Viszeralchirurgie, Marien Hospital Düsseldorf
• 2004: Leitender Oberarzt, Chirurgische Klinik, Marien Hospital Herne (Universitätsklinikum der Ruhr-Universität Bochum)
• 2004–2005: Chirurgischer Leiter des Interdisziplinären Bauchzentrums, Marien Hospital Herne
• 2005–2011: Chefarzt der Klinik für Chirurgie und Zentrum für Minimal-invasive Chirurgie, St. Vinzenz-Krankenhaus Düsseldorf
• Seit 2011: Chefarzt der Klinik für Viszeral-, Minimalinvasive und Onkologische Chirurgie, Marien Hospital Düsseldorf
• 2018: Zertifizierung als robotischer Konsoen-Chirurg
• 2021: Fellow of the European Board of Surgery – Abdominal Wall Surgery (Hon. FEBS-AWS)

Mitgliedschaften

• Vorstandsmitglied der Gesellschaft Nordrhein-Westfälischer Chirurgen, Leiter der Arbeitsgruppe Minimal-invasive Chirurgie
• Vorstandsmitglied der Arbeitsgruppe Hernienchirurgie der Deutschen Gesellschaft für Allgemein- und Viszeralchirurgie (DGAV)
• Vorstandsmitglied der Arbeitsgruppe Minimal-invasive Chirurgie der DGAV
• Präsident der 17. Jahrestagung der Deutschen Herniengesellschaft 2019
• Präsident der 11. DynaMesh International Hernia Masterclass 2024

Publikationen

1. Do we have to rethink slit-mesh technique in endoscopic inguinal hernia? – A matched pair analysis. Zarras K, Plambeck J, Kankam J,Hukauf M, Köckerling.  Hernia 29, 214 (2025). https://doi.org/10.1007/s10029-025-03394-9. Epub 2025 June 27.PMCID: PMC12204938
2. Risky hospital plan-A survey of head physicians in NRW: dramatic effects in visceral surgery. Braumann C, Meurer K, Niedergethmann M, Bauer KH, Ulrich A, Gebauer F, Rijcken E, Bultmann U, Held FG, Schmitz B, Hahn J, Schilling A, Pascher A, Zarras K, Uhl W. Chirurgie (Heidelb). 2025 Mar;96(3):222-231. doi: 10.1007/s00104-025-02253-8. Epub 2025 Feb 12.PMID: 39937303
3. STRONGHOLD first-year results of biomechanically calculated abdominal wall repair: a propensity score matching. Lesch C, Nessel R, Adolf D, Hukauf M, Köckerling F, Kallinowski F; STRONGHOLD/Herniamed-Collaborators GROUP; Willms A, Schwab R, Zarras K. Hernia. 2024 Feb;28(1):63-73. doi: 10.1007/s10029-023-02897-7. Epub 2023 Oct 10.PMID: 37815731 
4. The effect of an abdominal binder on postoperative outcome after open   incisional hernia repair in sublay technique: a multicenter, randomized pilot trial (ABIHR-II). Ortiz PR, Lorenz E, Meyer F, Croner R, Lünse S, Hunger R, Mantke R, Benz-Weisser A, Zarras K, Huenerbein M, Paasch C. Hernia. 2023 Oct;27(5):1263-1271. doi: 10.1007/s10029-023-02838-4. Epub 2023 Jul 19.PMID: 37466732 
5. Inguinal hernia operations-Always outpatient? DACH-Konsensusgruppe ambulante Leistenhernienchirurgie; Niebuhr H, Köckerling F, Fortelny R, Hoffmann H, Conze J, Holzheimer RG, Koch A, Köhler G, Krones C, Kukleta J, Kuthe A, Lammers B, Lorenz R, Mayer F, Pöllath M, Reinpold W, Schwab R, Stechemesser B, Weyhe D, Wiese M, Zarras K, Meyer HJ.Chirurgie (Heidelb). 2023 Mar;94(3):230-236. doi: 10.1007/s00104-023-01818-9. Epub 2023 Feb 14.PMID: 36786812
6. What is the reality in outpatient vs inpatient groin hernia repair? An analysis from the Herniamed Registry. Köckerling F, Lorenz R, Reinpold W, Zarras K, Conze J, Kuthe A, Lammers B, Stechemesser B, Mayer F, Fortelny R, Hoffmann H, Kukleta J, Weyhe D. Hernia. 2022 Jun;26(3):809-821. doi: 10.1007/s10029-021-02494-6. Epub 2021 Sep 16.PMID: 34532811
7. Perioperative outcome in groin hernia repair: what are the most important influencing factors? Köckerling F, Adolf D, Lorenz R, Stechemesser B, Kuthe A, Conze J, Lammers B, Fortelny R, Mayer F, Zarras K, Reinpold W, Hoffmann H, Weyhe D. Hernia. 2022 Feb;26(1):201-215. doi: 10.1007/s10029-021-02417-5. Epub 2021 Apr 24.PMID: 33895891
8. What is the reality in epigastric hernia repair?-a trend analysis from the Herniamed Registry. Köckerling F, Adolf D, Zarras K, Fortelny R, Lorenz R, Lammers B, Reinpold W, Stechemesser B, Schug-Pass C, Weyhe D. Hernia. 2021 Aug;25(4):1083-1094. doi: 10.1007/s10029-021-02408-6. Epub 2021 Apr 10.PMID: 33837884
9. Comparison of outcomes in rectus abdominis diastasis repair-which data do we need in a hernia registry? Köckerling F, Lorenz R, Stechemesser B, Conze J, Kuthe A, Reinpold W, Niebuhr H, Lammers B, Zarras K, Fortelny R, Mayer F, Hoffmann H, Kukleta JF, Weyhe D. Hernia. 2021 Aug;25(4):891-903. doi: 10.1007/s10029-021-02466-w. Epub 2021 Jul 28.PMID: 34319466
10. Assessment of potential influencing factors on the outcome in small (< 2 cm) umbilical hernia repair: a registry-based multivariable analysis of 31,965 patients. Köckerling F, Brunner W, Mayer F, Fortelny R, Adolf D, Niebuhr H, Lorenz R, Reinpold W, Zarras K, Weyhe D. Hernia. 2021 Jun;25(3):587-603. doi: 10.1007/s10029-020-02305-4. Epub 2020 Sep 20.PMID: 32951104
11. What are the trends in incisional hernia repair? Real-world data over 10 years from the Herniamed registry. Köckerling F, Hoffmann H, Mayer F, Zarras K, Reinpold W, Fortelny R, Weyhe D, Lammers B, Adolf D, Schug-Pass C. Hernia. 2021 Apr;25(2):255-265. doi: 10.1007/s10029-020-02319-y. Epub 2020 Oct 19.PMID: 33074396 
12. The Prevention of Positioning Injuries During Gynecologic Surgery. Guideline of the DGGG, OEGGG and SGGG (S2k Level, AWMF Registry Number 015/077, October 2020). Fleisch MC, Bader W, Balzer K, Bennefeld L, Boeing C, Bremerich D, Gass P, Geissbuehler V, Koch MC, Nothacker MJ, Pietzner K, Renner SP, Römer T, Roth S, Schütz F, Schulte-Mattler W, Sehouli J, Lippach K, Tamussino K, Teichmann A, Tempfer C, Thill M, Tinneberg HR, Zarras K. Geburtshilfe Frauenheilkd. 2021 Apr;81(4):447-468. doi: 10.1055/a-1378-4209. Epub 2021 Apr 14.PMID: 33867563
13. Trends in Emergent Groin Hernia Repair-An Analysis From the Herniamed Registry. Köckerling F, Heine T, Adolf D, Zarras K, Weyhe D, Lammers B, Mayer F, Reinpold W, Jacob D. Front Surg. 2021 Mar 30;8:655755. doi: 10.3389/fsurg.2021.655755. eCollection 2021.PMID: 33859994
14. What is the outcome of the open IPOM versus sublay technique in the treatment of larger incisional hernias?: A propensity score-matched comparison of 9091 patients from the Herniamed Registry. Köckerling F, Lammers B, Weyhe D, Reinpold W, Zarras K, Adolf D, Riediger H, Krüger CM.Hernia. 2021 Feb;25(1):23-31. doi: 10.1007/s10029-020-02143-4. Epub 2020 Feb 25.PMID: 32100213
15. Treatment of small (< 2 cm) umbilical hernias: guidelines and current trends from the Herniamed Registry. Köckerling F, Brunner W, Fortelny R, Mayer F, Adolf D, Niebuhr H, Lorenz R, Reinpold W, Zarras K, Weyhe D. Hernia. 2020 Nov 25. doi: 10.1007/s10029-020-02345-w. PMID: 33237505
16. What Is the Reality of Hiatal Hernia Management?-A Registry Analysis. Köckerling F, Zarras K, Adolf D, Kraft B, Jacob D, Weyhe D, Schug-Pass C. Front Surg. 2020 Oct 22;7:584196. doi: 10.3389/fsurg.2020.584196. eCollection 2020.PMID: 33195390
17. Do drains have an impact on the outcome after primary elective unilateral inguinal hernia repair in men? Köckerling F, Hantel E, Adolf D, Stechemesser B, Niebuhr H, Lorenz R, Zarras K, Marusch F. Hernia. 2020 Oct;24(5):1083-1091. doi: 10.1007/s10029-020-02254-y. Epub 2020 Jun 21.PMID: 32566993
18. What are the trends in incisional hernia repair? Real-world data over 10 years from the Herniamed registry. Köckerling F, Hoffmann H, Mayer F, Zarras K, Reinpold W, Fortelny R, Weyhe D, Lammers B, Adolf D, Schug-Pass C. Hernia. 2020 Oct 19. doi: 10.1007/s10029-020-02319-y. Online ahead of print. PMID: 33074396
19. Assessment of potential influencing factors on the outcome in small (< 2 cm) umbilical hernia repair: a registry-based multivariable analysis of 31,965 patients. Köckerling F, Brunner W, Mayer F, Fortelny R, Adolf D, Niebuhr H, Lorenz R, Reinpold W, Zarras K, Weyhe D. Hernia. 2020 Sep 20. doi: 10.1007/s10029-020-02305-4. Online ahead of print. PMID: 32951104
20. Single-Center Retrospective Analysis of the Outcomes of Patients Undergoing Staged Peritoneal Lavage for Secondary Peritonitis. Daskalopoulou D, Kankam J, Ambe PC, Zarras K. World J Surg. 2020 Jul;44(7):2185-2190. doi: 10.1007/s00268-020-05455-9.PMID: 32144471
21. Peritoneal spillage is not an issue in patients undergoing minimally invasive surgery for colorectal cancer. Ambe PC, Kankam J, Zarras K. World J Surg Oncol. 2020 May 27;18(1):107. doi: 10.1186/s12957-020-01882-z.PMID: 32460842
22. Routine preoperative mechanical bowel preparation with additive oral antibiotics is associated with a reduced risk of anastomotic leakage in patients undergoing elective oncologic resection for colorectal cancer. Ambe PC, Zarras K, Stodolski M, Wirjawan I, Zirngibl H.World J Surg Oncol. 2019 Jan 16;17(1):20. doi: 10.1186/s12957-019-1563-2.PMID: 30651119
23. The role of indocyanine green fluoroscopy for intraoperative bile duct visualization during laparoscopic cholecystectomy: an observational cohort study in 70 patients. Ambe PC, Plambeck J, Fernandez-Jesberg V, Zarras K. Patient Saf Surg. 2019 Jan 12;13:2. doi: 10.1186/s13037-019-0182-8. eCollection 2019.PMID: 30651756
24. The role of saline irrigation prior to wound closure in the reduction of surgical site infection: protocol for a systematic review and meta-analysis. Pieper D, Rombey T, Doerner J, Rembe JD, Zirngibl H, Zarras K, Ambe PC. Syst Rev. 2018 Oct 5;7(1):152. doi: 10.1186/s13643-018-0813-7. PMID: 30286812
25. HerniaSurge: international guidelines on treatment of inguinal hernia in adults: Comments of the Surgical Working Group Hernia (CAH/DGAV) and the German Hernia Society (DHG) on the most important recommendations]. Weyhe D, Conze J, Kuthe A, Köckerling F, Lammers BJ, Lorenz R, Niebuhr H, Reinpold W, Zarras K, Bittner R. Chirurg. 2018 Aug; 89(8):631-638. doi: 10.1007/s00104-018-0673-7. PMID: 29931383
26. Intraoperative real-time fluorescence angiography with indocyanine green for evaluation of intestinal viability during surgery for an incarcerated obturator hernia: a case report. Daskalopoulou D, Kankam J, Plambeck J, Ambe PC, Zarras K.Patient Saf Surg. 2018 Aug 24;12:24. doi: 10.1186/s13037-018-0173-1. eCollection 2018.PMID: 30154915
27. What are the differences in the outcome of laparoscopic axial (I) versus paraesophageal (II-IV) hiatal hernia repair? Köckerling F, Trommer Y, Zarras K, Adolf D, Kraft B, Weyhe D, Fortelny R, Schug-Paß C. Surg Endosc. 2017 Dec;31(12):5327-5341. doi: 10.1007/s00464-017-5612-z. Epub 2017 Jun 8. PMID: 28597286
28. Intraoperative real-time fluorescence angiography with indocyanine green for evaluation of intestinal viability during surgery for an incarcerated obturator hernia: a case report. Daskalopoulou D, Kankam J, Plambeck J, Ambe PC, Zarras K. Patient Saf Surg. 2018 Aug 24;12:24. doi: 10.1186/s13037-018-0173-1. eCollection 2018. PMID: 30154915
29. The Prevention of Positioning Injuries during Gynecologic Operations. Guideline of DGGG (S1-Level, AWMF Registry No. 015/077, February 2015). Fleisch MC, Bremerich D, Schulte-Mattler W, Tannen A, Teichmann AT, Bader W, Balzer K, Renner SP, Römer T, Roth S, Schütz F, Thill M, Tinneberg H, Zarras K. Geburtshilfe Frauenheilkd. 2015 Aug;75(8):792-807. doi: 10.1055/s-0035-1557776.PMID: 26365999
30. Surgical treatment of diverticulitis of the large intestine--a plea for early elective resection]. Hansen O, Zarras K, Graupe F, Dellana M, Stock W. Zentralbl Chir. 1996;121(3):190-200.PMID: 8867345
31. Surgical therapy of sigmoid diverticulitis in elderly patients. -What decides against early elective resection. Hansen O, Zarras K, Graupe F, Stock W. Langenbecks Arch Chir Suppl Kongressbd. 1996;113:470-3.PMID: 9101902
32. Preoperative esophagogastroduodenoscopy before elective surgical therapy of symptomatic cholelithiasis]. Schwenk W, Böhm B, Badke A, Zarras K, Stock W. Leber Magen Darm. 1992 Nov;22(6):225-9.PMID: 1479867 
33. Late abscess after laparoscopic cholecystectomy caused by lost gallstones]. Zarras K, Graupe F, Hansen O. Chirurg. 1996 Oct;67(10):1047-9. doi: 0.1007/s001040050102. PMID: 9011425
34. Varicose and ascending thrombophlebitis--surgical planning for emergency crossectomy by duplex ultrasound]. Graupe F, Hansen O, Zarras K, Mackrodt HG, Stock W.Langenbecks Arch Chir Suppl Kongressbd. 1998;115:1240-2.PMID: 9931847 

More than 100 presentations on national and international conferences