title: Intraosseous meningioma of the posterior fossa--Case report.
abstract: A 62-year-old male presented with a rare intraosseous meningioma with intradural extension manifesting as frequent vomiting and floating sensation that had persisted for 3 months. Neuroimaging detected a mass lesion that was mainly located extradurally in the right posterior fossa with a daughter lesion inside the dura. He underwent surgical excision of the mass lesion. Craniectomy exposed the main lesion of the tumor just beneath the thinned outer table of the skull, and in the extradural space, with the daughter lesion penetrating the dura. Both portions of the tumor were resected. There was no attachment to the adjacent dura mater. Histological examination showed meningotheliomatous meningioma containing scattered bony tissue. This intraosseous meningioma probably originated from the occipital bone with a small intradural extension caused by mechanical compression.
authors.affiliation: Department of Neurosurgery, Kennann Hospital, Tsuchiura, Ibaraki.
authors.forename: T
authors.initials: T
authors.lastname: Yamazaki
authors.forename: A
authors.initials: A
authors.lastname: Tsukada
authors.forename: K
authors.initials: K
authors.lastname: Uemura
authors.forename: H
authors.initials: H
authors.lastname: Satou
authors.forename: K
authors.initials: K
authors.lastname: Tsuboi
authors.forename: T
authors.initials: T
authors.lastname: Nose
mesh_terms: D002533:Cerebral Angiography; D003388:Cranial Fossa, Posterior / Q000000981:diagnostic imaging / Q000473:pathology*; D004824:Epidural Space; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008579:Meningioma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009777:Occipital Bone / Q000000981:diagnostic imaging / Q000473:pathology*; D012888:Skull Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed