title: Magnetic resonance investigations of non-acoustic petrous lesions.
abstract: Twenty cases of intrapetrous lesions were studied by a 1.5 T magnetic resonance (MR) unit. In all cases, comparisons were made between MR, CT and clinical findings. Our present material included 9 cholesteatomas, 1 cholesterol cyst, 3 primary epidermoid carcinomas, 2 metastatic neoplasms, 1 glomus jugulare tumor and 4 facial neurinomas. Gadolinium was injected in 7 cases and seemed to be the best method for studying the intrapetrous tumors. MR permitted accurate topographic study and assessment of tumoral extension, as well as a ready demonstration of tumor vascularity. The present findings also showed that MR is not capable of defining small bony detail or calcifications.
authors.affiliation: CIERM, Department of Radiology, Bicêtre Hospital, South Paris University, France.
authors.forename: D
authors.initials: D
authors.lastname: Doyon
authors.forename: K Y
authors.initials: KY
authors.lastname: Chan
authors.forename: M
authors.initials: M
authors.lastname: Attia
authors.forename: P
authors.initials: P
authors.lastname: Halimi
authors.forename: R
authors.initials: R
authors.lastname: Sigal
authors.forename: P
authors.initials: P
authors.lastname: Corlieu
authors.forename: S
authors.initials: S
authors.lastname: Bobin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D002781:Cholesteatoma / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000175:diagnosis; D010579:Petrous Bone / Q000473:pathology*; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000556:secondary