title: [Dissecting aneurysm of the extracranial vertebral artery causing TIA: a case report].
abstract: Spontaneous dissecting aneurysm of the extracranial vertebral artery is not frequent. We report a case of dissecting aneurysm of the left extracranial vertebral artery causing TIA. A 44-year-old man was admitted to our hospital with severe occipitalgia of sudden onset on Dec. 21, 1995. On admission, he presented with left hemiparesis and left hemidysesthesia. CT scan and SPECT showed no abnormal findings. His neurological deficits completely improved on the following day. Initial cerebral angiography performed on Dec. 27, 1995 showed pearl and string sign at V3 segment and irregular stenosis at V2 segment suggesting a dissecting aneurysm. We treated conservatively. Repeated angiography performed four weeks after the onset showed resolution of the stenosic lesion and disappearance of the aneurysm. We discussed diagnosis and etiology and treatment of dissecting aneurysm of the extracranial vertebral artery.
authors.affiliation: Department of Neurosurgery, Toyama Medical and Pharmaceutical University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Hamada
authors.forename: N
authors.initials: N
authors.lastname: Oka
authors.forename: O
authors.initials: O
authors.lastname: Yamagiwa
authors.forename: M
authors.initials: M
authors.lastname: Tanii
authors.forename: I
authors.initials: I
authors.lastname: Izumi
authors.forename: K
authors.initials: K
authors.lastname: Itoh
mesh_terms: D000328:Adult; D000784:Aortic Dissection / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D002546:Ischemic Attack, Transient / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D011859:Radiography; D014711:Vertebral Artery / Q000000981:diagnostic imaging