title: Rhabdomyosarcoma of the petrous ridge. CT and MR imaging in an atypical case with multiple cranial nerve palsy.
abstract: The CT and MR findings are reported in a case of biopsy proven rhabdomyosarcoma of the skull base. The tumor presumably originated in a pneumatized petrous ridge and had an atypical presentation of multiple cranial nerve palsy. The lesion exhibited a soft tissue density and a nonexpansile bone destruction on unenhanced CT. On MR imaging the lesion showed homogeneous intermediate signal intensity on T1 weighted images and a high signal intensity on proton density and T2 weighted images. The scanty literature on CT and MR features of rhabdomyosarcoma of the head and neck is reviewed.
authors.affiliation: Department of Clinical Physiopathology, University of Florence, Italy.
authors.forename: V
authors.initials: V
authors.lastname: Zampa
authors.forename: M
authors.initials: M
authors.lastname: Mascalchi
authors.forename: G P
authors.initials: GP
authors.lastname: Giordano
authors.forename: U
authors.initials: U
authors.lastname: Bongini
authors.forename: G
authors.initials: G
authors.lastname: Dal Pozzo
mesh_terms: D002675:Child, Preschool; D003389:Cranial Nerve Diseases / Q000209:etiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D010243:Paralysis / Q000209:etiology; D010579:Petrous Bone / Q000000981:diagnostic imaging* / Q000473:pathology*; D012208:Rhabdomyosarcoma / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D012888:Skull Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed