Benazepril induced isolated visceral angioedema: a rare and under diagnosed adverse effect of angiotensin converting enzyme inhibitors.

Angiotensin converting enzyme inhibitors are one of the most commonly prescribed medications and angioedema of upper aerogastric tracts is a well recognized complication. Isolated visceral angioedema with the use of angiotensin converting enzyme inhibitors is rare and is relatively under diagnosed. The visceral angioedema should be considered in patients taking angiotensin converting enzyme inhibitors who develop gastrointestinal complaints. We report a case of subacute intestinal obstruction from the use of benazepril, which was promptly resolved after withdrawing benazepril.