title: Oncocytic meningioma presenting with intratumoral hemorrhage.
abstract: Oncocytic meningiomas have been recently reported as a rare variant of meningiomas. Immunohistochemical analysis shows that neoplastic cells are positive for antimitochondrial antibodies. We report our first patient with oncocytic meningioma, presenting with intratumoral bleeding. A 72-year-old woman suffered from a disturbance of consciousness. A CT scan showed a tumor with intratumoral hemorrhage. An emergency craniotomy was performed and the tumor and hematoma were removed. Examination of the tumor revealed meningothelial cells with oncocytic change. We discuss the clinicopathological considerations of this uncommon variant and review the pertinent literature.
authors.affiliation: Department of Neurosurgery, Kanazawa Medical University, 1-1 Daigaku, Uchinada 920-0293, Ishikawa, Japan. Electronic address: yacchan1218@yahoo.co.jp.
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Sasagawa
authors.forename: Osamu
authors.initials: O
authors.lastname: Tachibana
authors.forename: Takaaki
authors.initials: T
authors.lastname: Iida
authors.forename: Hideaki
authors.initials: H
authors.lastname: Iizuka
mesh_terms: D018249:Adenoma, Oxyphilic / Q000150:complications / Q000473:pathology* / Q000601:surgery; D000368:Aged; D002543:Cerebral Hemorrhage / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D008577:Meningeal Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D008579:Meningioma / Q000150:complications / Q000473:pathology* / Q000601:surgery
keywords: Intratumoral hemorrhage; Mitochondria; Oncocytic meningioma