A Case of Multiple Cerebral Aneurysms Associated with Fenestration of the Basilar Artery

Abstract

A case of multiple carebral aneurysms associated with a fenestration of the basilar artery is described. A 63-year-old woman complained of a headache and was transferred to our hospital on September 13, 1985. There were no neurological deficits, except for a mild headache and nuchal stiffness, on admission. A computerized tomographic (CT) scan revealed a subarachnoid hemorrhage. Right carotid angiography disclosed saccular aneurysms arising from the bifurcation of the opthalmic artery and the right internal carotid artery and from the trif urcation of the right middle cerebral artery. These aneurysms were successfully treated by neck clipping. The postoperative recovery was uneventful and a vertebral angiography was performed. This demonstrated a fenestration of the proximal basilar artery which is an uncommon anomaly of the cerebral vessels. The embryological basis of this anomaly is briefly discussed.