A single centre case series of gallstone sigmoid ileus manag
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Gallstone sigmoid ileus is a rare condition that presents with symptoms of large bowel obstruction. The name is somewhat of a misnomer given that the condition relates to colon rather than small bowel. Gallstone sigmoid ileus arises as a result of three primary factors; cholelithiasis causing a cholecystoenteric fistula, a gallstone wide enough to obstruct a large bowel lumen and narrowing of the bowel.Two mechanisms exist by which a gallstone can pass into the large bowel and obstruct the lumen, cholecystocolonic and cholecystoenteric fistulas. The cholecystocolonic route represents the more common pathway for gallstone sigmoid ileus to arise. The other being that the gallstone transits the small bowel via the ileocaecal valve before becoming lodged in the sigmoid colon. This article presents 3 patients from a district general hospital within a 3-year period treated for gallstone sigmoid ileus. These cases add to literature by emphasizing the need for diagnostic awareness in patients with large bowel obstruction and highlighting what may be an under reported condition...

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