# Inferior Mesenteric Arteriovenous Fistula Successfully Treated with Surgical Resection: A Case Report

## TL;DR

A rare case of an arteriovenous fistula in the inferior mesenteric artery was successfully treated with surgery, resolving the patient's symptoms and preventing recurrence.

## Contribution

This case report presents a successful surgical treatment of an extremely rare idiopathic arteriovenous fistula.

## Key findings

- Surgical resection and ligation resolved the fistula and symptoms in a 63-year-old patient.
- No recurrence was observed during a 5-year follow-up period.
- CT imaging identified aneurysmal dilatation and a drainage vein into the descending colon's marginal vein.

## Abstract

Idiopathic inferior mesenteric arteriovenous fistula is an extremely rare pathology, and symptoms vary greatly depending on the shunt flow volume through the fistula. We report a case of idiopathic inferior mesenteric arteriovenous fistula in a 63-year-old man who presented with a pulsating sensation in the upper abdomen. Computed tomography revealed an inferior mesenteric arteriovenous fistula with aneurysmal dilatation and a drainage vein into the dilated marginal vein of the descending colon. Surgical resection and ligation of the fistula were successfully performed, and the postoperative course was uneventful. The patient’s symptoms resolved, and no recurrence was observed during the 5-year follow-up.