A1 segment hypoplasia associated with cerebral infarction after anterior communicating artery aneurysm rupture

摘要

BACKGROUND. Congenital hypoplasia or absence of the A1 segment of the anterior cerebral artery (ACA) has been associated with increased incidence of berry aneurysms at the anterior communicating artery (Acom) complex. It is not known, however, whether this anatomic variant also predisposes patients to complications after aneurysmal subarachnoid hemorrhage.