Claus Anders Bertelsen

Claus Anders Bertelsen

Clinical Associate Professor

Member of:

  • Surgery


  1. 2024
  2. Published

    Developing a phantom for simulating robotic-assisted complete mesocolic excision using 3D printing and medical imaging

    Hertz, P., Bertelsen, Claus Anders, Houlind, K., Bundgaard, L., Konge, Lars, Bjerrum, F. & Svendsen, M. B. S., Dec 2024, In: BMC Surgery. 24, 1, 8 p., 72.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Association between troponin I levels and mortality among patients undergoing acute high-risk abdominal surgery-A cohort study

    Kanstrup, C. T. B., Serup, C. M., Svarre, K. J., Rasmussen, M. C., Lundstrøm, Lars Hyldborg, Kleif, Jakob & Bertelsen, Claus Anders, 2024, In: World Journal of Surgery. 48, 2, p. 361-370 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Cutaneous sensory block area of the ultrasound-guided subcostal transversus abdominis plane block: an observational study

    Salmonsen, C. B., Lange, Kai, Rothe, C., Kleif, Jakob & Bertelsen, Claus Anders, 2024, In: Regional Anesthesia and Pain Medicine. 49, 4, p. 289-292

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    The effects of troponin screening among patients undergoing acute high-risk abdominal surgery: A retrospective cohort study

    Kanstrup, C. T. B., Svarre, K. J., Rasmussen, M. C., Serup, C. M., Lundstrøm, Lars Hyldborg, Kleif, Jakob & Bertelsen, Claus Anders, 2024, In: Acta Anaesthesiologica Scandinavica. 68, 4, p. 476-484 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    The incidence of venous thromboembolism after curative colon cancer surgery within an enhanced recovery after surgery programme

    COMES II - Copenhagen cOmplete Mesocolic Excision Study II study group, C. I. -. C. C. M. E. S. I. S. G. & The Danish Colorectal Cancer Group, T. D. C. C. G., 2024, In: Thrombosis Research. 237, p. 46-51 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. 2023
  8. Published

    Association between plane of mesocolic dissection and recurrence after complete mesocolic excision for right-sided colon cancer: a cohort study

    Bertelsen, Claus Anders, Gundestrup, A. K., Olsen, A. S. F., Bols, B., Ingeholm, P. & Kleif, Jakob, 2023, In: Colorectal Disease. 25, 7, p. 1392-1402 11 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Author Reply

    Bertelsen, Claus Anders & Kleif, Jakob, 2023, In: Diseases of the Colon and Rectum. 66, 3, p. E130 1 p.

    Research output: Contribution to journalLetterResearchpeer-review

  10. Published

    Comment on: Complete mesocolic excision for right colonic cancer: Prospective multicentre study

    Bertelsen, Claus Anders, Bianchi, P. P., Croner, R., Kleif, Jakob, Matzel, K. E., Merkel, S., Miskovic, D., Ruiz, M. G., Stearns, A. T. & Storli, K. E., 2023, In: British Journal of Surgery. 110, 6, p. 734 1 p.

    Research output: Contribution to journalComment/debateResearchpeer-review

  11. Published

    Has the time come for implementing neoadjuvant chemotherapy for clinical locally advanced colon cancer?

    Bertelsen, Claus Anders & Kleif, Jakob, 2023, In: Colorectal Disease. 25, 7, p. 1540-1541 2 p.

    Research output: Contribution to journalLetterResearchpeer-review

  12. Published

    Long-term outcome after Bascom's cleft-lift procedure under tumescent local analgesia for pilonidal sinus disease: a cohort study

    Svarre, K. J., Serup, C. M., Kanstrup, C. T. B., Kleif, Jakob & Bertelsen, Claus Anders, 2023, In: Colorectal Disease. 25, 4, p. 707-716

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Long-term outcome after Bascom's pit-pick procedure for pilonidal sinus disease: A cohort study

    Serup, C. M., Svarre, K. J., Kanstrup, C. T. B., Kleif, Jakob & Bertelsen, Claus Anders, 2023, In: Colorectal Disease. 25, 3, p. 413-419

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Prolonged venous thromboembolic prophylaxis — are current guidelines justified with the use of enhanced recovery after surgery and minimal invasive colorectal surgery?

    Bertelsen, Claus Anders & Kleif, Jakob, 2023, In: Colorectal Disease. 25, 2, p. 326-327 2 p.

    Research output: Contribution to journalComment/debateResearchpeer-review

  15. Published

    Validation of the German classification system for quality assessment of right-sided colon cancer specimens

    Bertelsen, Claus Anders, Olsen, A. S. F., Gundestrup, A. K., Karlsen, A. A., Neuenschwander, A. U., Buchbjerg, T., Iversen, E. R., Bols, B., Ingeholm, P. & Kleif, Jakob, 2023, In: Colorectal Disease. 25, 8, p. 1622-1630 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. 2022
  17. Published

    Complete mesocolic excision is not just dissection in the mesocolic plane

    Sakjah, S., Kleif, Jakob & Bertelsen, Claus Anders, 2022, In: Colorectal Disease. 24, 11, p. 1436-1436

    Research output: Contribution to journalLetterResearchpeer-review

  18. Published

    Incidence of appendicitis during COVID-19 lockdown: A nationwide population-based study

    Jantzen, A. T., Bang-Nielsen, A., Bertelsen, Claus Anders, Torp-Pedersen, Christian & Kleif, Jakob, 2022, In: Scandinavian Journal of Surgery. 111, 2, 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Non-Microradical Resection Margin as a Predictor of Recurrence In Stage III Colon Cancer Patients Undergoing Complete Mesocolic Excision: A Prospective Cohort Study

    Gundestrup, A. K., Olsen, A. S. F., Ingeholm, P., Bols, B., Kleif, Jakob & Bertelsen, Claus Anders, 2022, In: Diseases of the Colon and Rectum. 65, 5, p. 683-691

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Plane of mesocolic dissection as predictor of recurrence after complete mesocolic excision for sigmoid colon cancer: A cohort study

    Sakjah, S., Olsen, A. S. F., Gundestrup, A. K., Born, P. W., Bols, B., Ingeholm, P., Kleif, Jakob & Bertelsen, Claus Anders, 2022, In: Colorectal Disease. 24, 8, p. 943-953 11 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Risk of Local Recurrence After Complete Mesocolic Excision for Right-Sided Colon Cancer: Post-Hoc Sensitivity Analysis of a Population-Based Study

    COMES study group, C. S. G., 2022, In: Diseases of the Colon and Rectum. 65, 9, p. 1103-1111

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. 2021
  23. Published

    Accuracy of preoperative staging with multidetector computed tomography in colon cancer

    Olsen, A. S. F., Gundestrup, A. K., Kleif, Jakob, Thanon, T. & Bertelsen, Claus Anders, 2021, In: Colorectal Disease. 23, 3, p. 680-688

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Optimal peripheral nerve block after minimally invasive colon surgery – a study protocol for a randomised trial

    Salmonsen, C. B., Lange, Kai, Kleif, Jakob & Bertelsen, Claus Anders, 2021, In: Danish Medical Journal. 68, 12, 10 p., A03210245.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Recurrence after complete mesocolic excision for right-sided colon cancer: post hoc sensitivity analyses—early recurrence, surgery by specialist and dissection in the mesocolic plane

    Bertelsen, Claus Anders, Neuenschwander, A. U. & Kleif, Jakob, 2021, In: Colorectal Disease. 23, 8, p. 1971-1981

    Research output: Contribution to journalJournal articleResearchpeer-review

  26. 2019
  27. Published

    5-year outcome after complete mesocolic excision for right-sided colon cancer: a population-based cohort study

    Bertelsen, Claus Anders, Neuenschwander, A. U., Jansen, J. E., Tenma, J. R., Wilhelmsen, M., Kirkegaard-Klitbo, A., Iversen, E. R., Bols, B., Ingeholm, P., Rasmussen, L. A., Jepsen, L. V., Born, P. W., Kristensen, B. & Kleif, J., 2019, In: The Lancet Oncology. 20, 11, p. 1556-1565 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  28. Published

    Perianal absces efter analt samleje skal give mistanke om rektal gonokokinfektion

    Kanstrup, C., Perregaard, H. & Bertelsen, Claus Anders, 2019, In: Ugeskrift for Laeger. 181, 2 p., V10180736.

    Research output: Contribution to journalLetterResearchpeer-review

  29. Published

    The incomplete story of complete mesocolic excision – Authors' reply

    Bertelsen, Claus Anders, Neuenschwander, A. U. & Kleif, J., 2019, In: The Lancet Oncology. 20, 12, p. e659

    Research output: Contribution to journalComment/debateResearchpeer-review

  30. 2010
  31. Published

    Treatment of pilonidal sinuses in Denmark is not optimal

    Fabricius, R., Petersen, L. W. & Bertelsen, Claus Anders, 1 Dec 2010, In: Danish Medical Bulletin (Online). 57, 12, p. A4200 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  32. Published

    Can the quality of colonic surgery be improved by standardisation of surgical technique with complete mesorectal excision?

    Bertelsen, Claus Anders, Bols, B., Ingeholm, P., Jansen, J. E., Neuenschwander, A. U. & Vilandt, J., 24 Oct 2010, In: Colorectal Disease Online.

    Research output: Contribution to journalJournal articleResearchpeer-review

  33. Published

    Anastomotic leakage after anterior resection for rectal cancer: risk factors

    Bertelsen, Claus Anders, Andreasen, A. H., Jørgensen, T. & Harling, H., 2010, In: Colorectal Disease. 12, 1, p. 37-43 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  34. 2008
  35. Published

    Behandling af pilonidalcyster. Gennemgang af et Cochrane-review

    Bertelsen, Claus Anders, 2008, In: Ugeskrift for læger. 170, 26-32, p. 2317-2321 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 229427436