title: Posterior projecting carotid bifurcation aneurysms.
abstract: Posteriorly projecting carotid bifurcation aneurysms are rare. Proximal anterior cerebral artery aneurysms are even more uncommon. Distinguishing between true posteriorly projecting carotid bifurcation aneurysms and carotid A1 aneurysms can be difficult but it is important because small posteriorly projecting carotid bifurcation aneurysms may need a contralateral approach for adequate exposure. We report our experience with a recent case that illustrated this problem.
authors.affiliation: The Department of Neurosurgery, Royal Adelaide Hospital, North Terrace, Adelaide, South Australia 5000, Australia. timothyibrahim@gmail.com
authors.forename: Timothy
authors.initials: T
authors.lastname: Ibrahim
authors.forename: Brian P
authors.initials: BP
authors.lastname: Brophy
mesh_terms: D015901:Angiography, Digital Subtraction; D001921:Brain / Q000098:blood supply; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D020215:Carotid Artery, Internal, Dissection / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D002941:Circle of Willis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006261:Headache / Q000209:etiology; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008297:Male; D019635:Neurosurgical Procedures; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D013525:Surgical Instruments; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures; D055815:Young Adult