title: Intracranial saccular aneurysm and moyamoya disease.
abstract: Moyamoya disease is a rare but well described entity which has been found in the angiographic investigation of subarachnoid hemorrhage, its most common symptom in adults. We present 4 patients in whom moyamoya disease and an intracranial saccular aneurysm were discovered. In 2 of the 3 patients suffering a hemorrhage, the aneurysm was the source of bleeding. Three of the aneurysms were located at the basilar artery bifurcation. We recommend a careful search for a concomitant aneurysm in all patients with subarachnoid hemorrhage in whom moyamoya disease is found. We believe these patients should be treated as though the aneurysm were the source of bleeding.
mesh_terms: D000328:Adult; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D002533:Cerebral Angiography; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging / Q000601:surgery; D002560:Cerebrovascular Circulation; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009072:Moyamoya Disease / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery