A Rare Anatomic Variant of a Solitary Internal Carotid Artery Associated with Moyamoya Phenomenon of the Middle Cerebral Artery

Abstract

SUMMARY: A case of a congenital solitary internal carotid artery with complicated anastomosis is presented. This rare anomaly was an incidental finding at cerebral angiography in a patient with a poor-grade subarachnoid hemorrhage and a ruptured anterior communicating artery aneurysm.