A ruptured aneurysm at the basilar artery fenestration.
D000328:Adult; D001488:Basilar Artery / Q000000981:diagnostic imaging; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology*; D006261:Headache / Q000209:etiology; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging; D008297:Male; D011859:Radiography; D012422:Rupture, Spontaneous; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging; D014711:Vertebral Artery / Q000000981:diagnostic imaging