title: [Osteoma originating in the dura: a case report].
abstract: We report a case of intracranial osteoma attached to the dura. The patient, a 35-year-old man, had suffered several episodes of vertigo over the previous two years. Physical and neurological findings on admission were unremarkable. A plain craniogram showed a dense calcified mass in the right frontal area, and CT revealed a homogeneous high-density mass without significant enhancement. MRI confirmed the dural origin of the lesion, which showed hyperintensity in the T1-weighted image and low intensity in the T2-weighted image. The mass was 5 cm in diameter and 2 cm in thickness. Total resection was performed under a preoperative diagnosis of calcified meningioma. Histopathology revealed the mass to be an osteoma. Osteomas are common benign bone tumors that usually arise from long bones of the extremities. Intracranial osteomas are extremely rare lesions. The literature on intracranial osteoma of dural origin is reviewed.
authors.affiliation: Department of Neurosurgery, Kokura Memorial Hospital, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Sugimoto
authors.forename: I
authors.initials: I
authors.lastname: Nakahara
authors.forename: M
authors.initials: M
authors.lastname: Nishikawa
authors.forename: M
authors.initials: M
authors.lastname: Tanaka
authors.forename: T
authors.initials: T
authors.lastname: Terashima
authors.forename: H
authors.initials: H
authors.lastname: Yanagihara
authors.forename: J
authors.initials: J
authors.lastname: Hayashi
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000473:pathology* / Q000601:surgery; D004388:Dura Mater; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000473:pathology; D010016:Osteoma / Q000473:pathology* / Q000601:surgery