A case of ruptured distal lenticulostriate artery aneurysm presenting with intraventricular hemorrhage

Abstract

Distal lenticulostriate artery(LSA) aneurysms are extremely rare with only 52 case reports in the published literature. When LSAs rupture, they are often associated with deep intraparenchymal hemorrhages. It is difficult to treat LSAs with either endovascular or microsurgical techniques, because they are located near the pyramidal tract. The optimal strategy for treatment of aneurysms involving small perforating arteries is controversial. This report describes a case of ruptured distal LSA aneurysm in a 59- year-old female who was treated conservatively. There was no recurrence of hemorrhage, and follow-up angiography demonstrated spontaneous thrombosis. The case report is followed by a review of the literature and a discussion of the treatment of this rare aneurysm.