Nijssen, D.J. and Wienholts, K. and Postma, M.J. and Bemelman, W.A. and Tuynman, J. and Laméris, W. and Tanis, P.J. and Hompes, R. and Leijtens, J.W.A. and Heemskerk, J. and Vijgen, G.H.E.J. and Ancion, E. and Belgers, E.H.J. and Garms, L. and de Wilt, J.H.W. and van Dalsen, A.D. and Steller, E.J.A. and van Westreenen, H.L. and Brokelman, W.J.A. and Verdaasdonk, J. and Stassen, L.P.S. and Scholten, J. and Oosterling, S.J. and van Wely, B.J. and van der Meij, W. and de Jonge, W.J. and van Dijk, S. and Festen, S. and Karsten, T.M. and Gerhards, M. and Morsink, L. and Masselink, I. and Holzik, M. F. Lutke and Verhagen, T. and Faneyte, I. and Burger, J.W.A. and Bloemen, J.G. and vsn de Ven, A.W.H. and van der Bilt, J.D.M. and Musters, G.D. and Derikx, J.P.M. and Sikkenk, D.J. and Verheijen, P.M. and Consten, E.C.J. and Ponsioen, C.Y. and van Dieren, S. and Petersen, A.E. and van Helsdingen, C.P.M. and Talboom, K. and Slooter, M.D. (2025) Hospital costs of different treatment strategies for anastomotic leakage after total mesorectal excision: a multicentre cost analysis. Techniques in Coloproctology, 29 (1). ISSN 11236337

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Abstract

Background: Limited data exist on hospital costs incurred by anastomotic leakage (AL), particularly in relation to specific treatment approaches. This study aimed to analyse the incremental hospital costs of AL after total mesorectal excision (TME), stratified by treatment strategy, over a 1-year time horizon. Methods: Patients undergoing total mesorectal excision (TME) for rectal cancer (2020, 2023), included in the control cohort of the IMARI-study at 15 Dutch centres, were analysed. A cost analysis was conducted according to Dutch National Healthcare Institute guidelines. The primary outcome was the incremental hospital costs incurred by patients with AL detected within 30 days postoperatively, stratified by treatment strategy. Results: The analysis compared treatment costs in 32 patients with AL and 82 patients without AL. The average hospital costs per patient in the first postoperative year were â¬15.312. In patients with AL, the mean incremental costs were â¬24.333. Major cost drivers in the AL group were prolonged hospitalization (+â¬13.150) and (re)interventions (+â¬8.910). The treatment costs differed significantly between strategies: no faecal diversion (â¬10.062), faecal diversion with passive drainage (â¬23.903), faecal diversion with active drainage (â¬35.552), and salvage surgery (â¬38.793). Conclusions: AL after TME resulted in a nearly fourfold increase in hospital costs compared with patients without AL. Salvage surgery was the most expensive treatment strategy, followed by faecal diversion with active drainage. Future studies should evaluate how these treatment costs relate to clinical success rates, including rates of chronic pelvic sepsis and permanent stomas. Trial registration: This study used data from the IMARI-study. The IMARI-study is registered with the Dutch Central Committee on Research Involving Human Subjects (NL67600.018.18) and is submitted to the http://www.onderzoekmetmensen.nl/en database (NL-OMON26456 and NL-OMON55903). © The Author(s) 2025.

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