title: Pleomorphic adenoma of the middle ear and mastoid with posterior fossa extension.
abstract: We describe the case of a pleomorphic adenoma of the middle ear and mastoid, with extension into the posterior cranial fossa. The lesion was characterized by extensive bony destruction and close proximity to the facial nerve. Ectopic or choristomatous salivary gland tissue within the middle ear cleft is the most probable origin of this tumor.
authors.affiliation: Department of Otolaryngology, University of Texas Medical Branch, Galveston 77550.
authors.forename: B R
authors.initials: BR
authors.lastname: Peters
authors.forename: H E
authors.initials: HE
authors.lastname: Maddox
authors.forename: J G
authors.initials: JG
authors.lastname: Batsakia
mesh_terms: D008949:Adenoma, Pleomorphic / Q000473:pathology*; D003388:Cranial Fossa, Posterior / Q000473:pathology; D004428:Ear Neoplasms / Q000473:pathology; D004432:Ear, Middle / Q000473:pathology; D006801:Humans; D008297:Male; D008416:Mastoid / Q000473:pathology; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D012888:Skull Neoplasms / Q000473:pathology*