title: Acute disappearance of ruptured aneurysm located near the origin of the superior cerebellar artery - case report - .
abstract: A 63-year-old woman presented with a ruptured aneurysm which apparently spontaneously thrombosed. She was admitted after sudden onset of severe headache. Computed tomography (CT) demonstrated subarachnoid hemorrhage (SAH) in the pontine and interpeduncular cisterns. Initial three-dimensional CT (3D-CT) angiography revealed an aneurysm (diameter, 9 mm) near the origin of the left superior cerebellar artery. However, angiography 3 hours later failed to show the aneurysm. Total thrombosis was thought to have occurred in the aneurysm. The patient returned home with no deficit 1 month after admission. T(1)- and T(2)-weighted magnetic resonance imaging 75 days after the SAH demonstrated the thrombosed aneurysm as an isointense mass lesion. 3D-CT angiography showed no recanalization of the aneurysm 9 months after the SAH.
authors.affiliation: Department of Neurosurgery, Uji Tokushukai Hospital, Uji, Kyoto, Japan.
authors.forename: Hiroya
authors.initials: H
authors.lastname: Nakau
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Nagatani
authors.forename: Reiko
authors.initials: R
authors.lastname: Nakau
authors.forename: Toshio
authors.initials: T
authors.lastname: Ametani
mesh_terms: D000208:Acute Disease; D017542:Aneurysm, Ruptured / Q000150:complications / Q000175:diagnosis*; D002531:Cerebellum / Q000098:blood supply*; D002533:Cerebral Angiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional; D002532:Intracranial Aneurysm / Q000150:complications / Q000175:diagnosis*; D020767:Intracranial Thrombosis / Q000175:diagnosis*; D008875:Middle Aged; D012075:Remission, Spontaneous; D013345:Subarachnoid Hemorrhage / Q000209:etiology*; D014057:Tomography, X-Ray Computed