Endoscopic management of patients with high-risk colorectal colitis–associated neoplasia: a Delphi study

Michiel T.J. Bak*, Eduardo Albéniz, James E. East, Nayantara Coelho-Prabhu, Noriko Suzuki, Yutaka Saito, Takayuki Matsumoto, Rupa Banerjee, Michal F. Kaminski, Ralf Kiesslich, Emmanuel Coron, Annemarie C. de Vries, C. Janneke van der Woude, Raf Bisschops, Ailsa L. Hart, Steven H. Itzkowitz, Mathieu Pioche, Leon M.G. Moons, Bas Oldenburg

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Background and Aims: Current guidelines recommend endoscopic resection of visible and endoscopically resectable colorectal colitis–associated neoplasia (CAN) in patients with inflammatory bowel disease (IBD). However, patients with high-risk CAN (HR-CAN) are often not amenable to conventional resection techniques, and a consensus approach for the endoscopic management of these lesions is presently lacking. This Delphi study aims to reach consensus among experts on the endoscopic management of these lesions. Methods: A 3-round modified Delphi process was conducted to reach consensus among worldwide IBD and/or endoscopy experts (n = 18) from 3 continents. Consensus was considered if ≥75% agreed or disagreed. Quality of evidence was assessed by the criteria of the Cochrane Collaboration group. Results: Consensus was reached on all statements (n = 14). Experts agreed on a definition for CAN and HR-CAN. Consensus was reached on the examination of the colon with enhanced endoscopic imaging before resection, the endoscopic resectability of an HR-CAN lesion, and endoscopic assessment and standard report of CAN lesions. In addition, experts agreed on type of resections of HR-CAN (< 20 mm, >20 mm, with or without good lifting), endoscopic success (technical success and outcomes), histologic assessment, and follow-up in HR-CAN. Conclusions: This is the first step in developing international consensus–based recommendations for endoscopic management of CAN and HR-CAN. Although the quality of available evidence was considered low, consensus was reached on several aspects of the management of CAN and HR-CAN. The present work and proposed standardization might benefit future studies.

Original languageEnglish
Pages (from-to)767-779.e6
JournalGastrointestinal Endoscopy
Issue number4
Publication statusPublished - Apr 2023

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© 2023 American Society for Gastrointestinal Endoscopy


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