title: Dissecting aneurysms of the anterior cerebral artery and accessory middle cerebral artery. Case report.
abstract: A 66-year-old woman presented with dissecting aneurysms of the anterior cerebral artery (ACA) and accessory middle cerebral artery (MCA) manifesting as subarachnoid hemorrhage but without radiological evidence of the dissecting aneurysms. Intraoperative observation revealed that the vessel walls were dark purple in color, a typical finding of dissecting aneurysm. The abnormal A1 segment was trapped and the dissecting aneurysm of the accessory MCA was wrapped. In the case of SAH of unknown origin, dissecting aneurysm should always be kept in mind even if the angiogram does not show any abnormal finding. This is the first reported case of dissecting aneurysm of the accessory MCA.
authors.affiliation: Department of Neurosurgery, Iwate Medical University, Morioka, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Otawara
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: M
authors.initials: M
authors.lastname: Abe
authors.forename: N
authors.initials: N
authors.lastname: Tomizuka
authors.forename: A
authors.initials: A
authors.lastname: Ogawa
mesh_terms: D000368:Aged; D000784:Aortic Dissection / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D001783:Blood Flow Velocity / Q000502:physiology; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D017585:Ultrasonography, Doppler, Transcranial