Mesenteric arteriovenous fistulas are a rare entity. Those involving the inferior mesenteric artery are exceptionally rare with only 13 cases reported in the English literature,
1,
2 of which only one has been associated with ischemic colitis. Ischemic colitis is a well-recognized clinical entity that typically occurs spontaneously in elderly patients and is not associated with a specific clinical presentation.
3 We report a case of ischemic colitis caused by venous hypertension associated with a congenital inferior mesenteric arteriovenous fistula. To our knowledge, this is the first reported case of a mesenteric arteriovenous fistula causing ischemic colitis in a patient without previous gastrointestinal surgery or trauma.
