title: Chordoid meningioma: report of two cases.
abstract: We present CT scan, MRI and histopathologic findings of two patients harboring a rare type of meningioma. In the first case, a 52 year-old male patient, a large parasellar mass invading the cavernous sinus, infiltrating the infratemporal fossa and extending as low as C2 was founded. The tumor was isointense on T1, enhanced strongly with gadolinium injection, and was hyperintense on T2. In the second case, a 19-year-old male patient, a large high density temporal right mass was disclosed by CT scan. Both patients were taken to surgery. In the first case, only a partial removal was possible to be accomplished due to a severe intra operative bleeding. In the second case, the tumor was totally removed. Both showed characteristic pathologic findings of a meningioma resembling a chordoma. Meningioma is a relatively common intracranial tumor, occurring most frequently in adults, showing a wide variety of growth patterns. We described a pattern that had a peculiar chordoma-like appearance. The pathological findings and the differential diagnosis from chordoma are discussed.
authors.affiliation: Department of Neurosurgery, Federal University of Sáo Paulo, São Paulo SP, Brazil. detella.ncir@epm.br
authors.forename: Oswaldo Ignácio
authors.initials: OI
authors.lastname: de Tella
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Herculano
authors.forename: Mirto Nelso
authors.initials: MN
authors.lastname: Prandini
authors.forename: João Norberto
authors.initials: JN
authors.lastname: Stavile
authors.forename: Antonio de Pádua Furquim
authors.initials: Ade P
authors.lastname: Bonatelli
mesh_terms: D000328:Adult; D002817:Chordoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005682:Gadolinium; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008579:Meningioma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
chemical_list: D005682:Gadolinium