title: Petroclival mixed meningioma.
abstract: We present a 47-year-old lady with a large dumb-bell petroclival-cavernous sinus meningioma. The tumour was of mixed histopathology; the anterior part, in relationship to the cavernous sinus, was a syncitial meningioma and the posterior part in the petroclival region was a transitional meningioma. The two histological subtypes of meningioma within the same tumour displayed remarkable differences in their radiological features, nature of extensions, relationship with the adjoining structures and consistency. The clinical course of the two subtypes was also different. The unusual features of this case are reported and the relevant literature briefly reviewed.
authors.affiliation: Department of Neurosurgery, Seth GS Medical College and King Edward VII Memorial Hospital, Mumbai, India.
authors.forename: D P
authors.initials: DP
authors.lastname: Muzumdar
authors.forename: A
authors.initials: A
authors.lastname: Goel
authors.forename: S
authors.initials: S
authors.lastname: Fattepurkar
mesh_terms: D001259:Ataxia / Q000209:etiology; D002426:Cavernous Sinus / Q000473:pathology*; D005260:Female; D006261:Headache / Q000209:etiology; D006801:Humans; D008579:Meningioma / Q000175:diagnosis / Q000473:pathology*; D008875:Middle Aged; D009460:Neurologic Examination