title: Ossified frontosphenoorbital meningioma en plaque, mimicking extensive hyperostosis.
abstract: Small intratumoral calcifications are often seen within meningioma, but ossification of the whole neoplasm is very rare. The case of an ossified frontosphenoorbital meningioma en plaque is presented. The radiological appearance resembled extensive hyperostosis extending from the anterior clinoid process to the cerebral convexity and falx cerebri. It is possible that, in some cases of meningioma, the identified "hyperostosis" represents partial ossification of the tumor itself.
authors.affiliation: Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, Japan. kkato@nij.twmu.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Kato
authors.forename: M
authors.initials: M
authors.lastname: Chernov
authors.forename: T
authors.initials: T
authors.lastname: Urino
authors.forename: H
authors.initials: H
authors.lastname: Kasuya
authors.forename: O
authors.initials: O
authors.lastname: Kubo
authors.forename: H
authors.initials: H
authors.lastname: Iseki
authors.forename: T
authors.initials: T
authors.lastname: Hori
mesh_terms: D002114:Calcinosis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D035262:Cranial Fossa, Anterior / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D019299:Decompression, Surgical; D003937:Diagnosis, Differential; D003951:Diagnostic Errors / Q000517:prevention & control; D005624:Frontal Bone / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D006957:Hyperostosis Frontalis Interna / Q000175:diagnosis; D008297:Male; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008579:Meningioma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D008940:Mitotic Index; D019635:Neurosurgical Procedures; D015840:Oculomotor Nerve Diseases / Q000209:etiology / Q000473:pathology / Q000601:surgery; D019736:Prostheses and Implants; D019651:Plastic Surgery Procedures; D013100:Sphenoid Bone / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed