Ectasia and fenestration of the anterior cerebral artery associated with persistent trigeminal artery: case report.

Multiple vascular anomalies in a 22-year-old patient who had signs and symptoms of vestibulocochlear dysfunction are reported. Angiography revealed a fenestration of the proximal segment of the left anterior cerebral artery, an ectasia of the left anterior and posterior cerebral arteries, and a persistence of the right trigeminal artery. The rarity of the association is documented, and the clinical significance is discussed.