Bilateral aneurysm formation developing from junctional dilatation (infundibulum) of the posterior communicating arteries

Abstract

✓ The authors report a case in which bilateral aneurysms developed from junctional dilatations of the posterior communicating arteries. A 7-year follow-up study of this case strongly suggested that an infundibulum can develop into a true aneurysm. After reviewing seven cases in the literature, the authors conclude that junctional dilatations, especially in young women with a history of aneurysmal rupture, should be carefully followed by angiography.