title: Fenestration of the internal carotid artery: a rare mass of the hypotympanum associated with persistence of the stapedial artery.
abstract: A 61-year-old woman was examined because of unilateral nonpulsatile tinnitus involving the right ear. CT scanning showed a soft-tissue mass in the hypotypanum. Angiographically, the mass was identified as a fenestrated or duplicated internal carotid artery associated with persistence of the stapedial artery. Embryologic considerations are discussed.
authors.affiliation: Department of Radiology, Medical College of Pennsylvania, Philadelphia 19129, USA.
authors.forename: R A
authors.initials: RA
authors.lastname: Koenigsberg
authors.forename: J L
authors.initials: JL
authors.lastname: Zito
authors.forename: M
authors.initials: M
authors.lastname: Patel
authors.forename: J D
authors.initials: JD
authors.lastname: Swartz
authors.forename: E
authors.initials: E
authors.lastname: Goldofsky
authors.forename: G
authors.initials: G
authors.lastname: Zahtz
mesh_terms: D001158:Arteries / Q000002:abnormalities; D002343:Carotid Artery, Internal / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D004432:Ear, Middle / Q000098:blood supply; D005260:Female; D006801:Humans; D008875:Middle Aged; D013199:Stapes / Q000098:blood supply*; D014012:Tinnitus / Q000209:etiology*; D014057:Tomography, X-Ray Computed