title: Fenestration of the oculomotor nerve by a duplicated posterior cerebral artery and aneurysm. Case report.
abstract: The authors report a case of a posterior cerebral artery aneurysm arising from an aberrant arterial branch that was found to be splitting the oculomotor nerve. This 63-year-old man presented with headaches, and CT imaging revealed subarachnoid hemorrhage primarily within the basilar cisterns. Formal angiography and CT angiography revealed a saccular aneurysm arising from the posterior cerebral artery. Intraoperatively, the third cranial nerve was found to be fenestrated with the artery and aneurysm.
authors.affiliation: Department of Neurosurgery, University of Utah, Salt Lake City, Utah 84132, USA.
authors.forename: Mandy J
authors.initials: MJ
authors.lastname: Binning
authors.forename: William T
authors.initials: WT
authors.lastname: Couldwell
mesh_terms: D002533:Cerebral Angiography; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D015840:Oculomotor Nerve Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D020769:Posterior Cerebral Artery / Q000002:abnormalities* / Q000601:surgery*; D014057:Tomography, X-Ray Computed