Colonic gallstone ileus.

Gallstone ileus is a rare aetiology of bowel obstruction and very infrequently occurs in the colon. Typically, colonic gallstone ileus carries a high morbidity and mortality and requires surgery. This case report describes a cholecystocolonic fistula in a patient with ulcerative colitis with resulting colonic gallstone ileus, which was successfully intervened on via an endoscopic approach. © BMJ Publishing Group Ltd (unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.