title: Skull base chordoid meningioma: imaging features and pathology.
abstract: The clinical, imaging and pathological features of a skull base chordoid meningioma (CM) are described. The huge tumour resulted in obstructive hydrocephalus and partial erosion of the clivus such that a chordoma was suspected. The lesion's MRI findings were similar to those of a meningioma. Light microscopic, immunohistochemistry and ultrastructural features were diagnostic of CM. Chordoid meningioma is a rare subtype of meningioma and has a great tendency to recur should surgical resection be incomplete.
authors.affiliation: Department of Radiology, Westmead Hospital, Sydney, New South Wales, Australia. myssoo@optusnet.com.au
authors.forename: Mark Y S
authors.initials: MY
authors.lastname: Soo
authors.forename: Thomas
authors.initials: T
authors.lastname: Ng
authors.forename: Lavier
authors.initials: L
authors.lastname: Gomes
authors.forename: Melville
authors.initials: M
authors.lastname: Da Cruz
authors.forename: Mark
authors.initials: M
authors.lastname: Dexter
mesh_terms: D002830:Choroid Neoplasms / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008579:Meningioma / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D019292:Skull Base Neoplasms / Q000175:diagnosis* / Q000473:pathology