title: Brain surface ependymoma.
abstract: A case of brain surface ependymoma is reported here. A 41-year-old woman presented with weakness of the right upper limb. Magnetic resonance imaging revealed a left fronto-parietal cystic tumor with a calcified mural nodule. Total removal of the tumor was performed. This tumor was located within the surface portion of the fronto-parietal parenchyma and was sharply demarcated from the surrounding brain tissue, and there was no continuity with the ventricles. Histological examination of this tumor showed monotonous proliferation of tumor cells with moderate cellularity and occasional mitoses, forming true ependymal rosettes and perivascular pseudorosettes with fibrillary background. A clear cell component resembling oligodendroglioma was partly noted. The tumor cells showed positive immunoreaction for glial fibrillary acid protein and vimentin.
authors.affiliation: Department of Pathology, Prefectural Hospital Miyazaki, Miyazaki Medical College, Japan. ysugar@pref-hp.miyazaki.miyazaki.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Ochiai
authors.forename: Y
authors.initials: Y
authors.lastname: Yamakawa
authors.forename: K
authors.initials: K
authors.lastname: Nabeshima
authors.forename: Y
authors.initials: Y
authors.lastname: Asada
authors.forename: T
authors.initials: T
authors.lastname: Hayashi
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D002540:Cerebral Cortex / Q000473:pathology* / Q000601:surgery; D004806:Ependymoma / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D005260:Female; D005625:Frontal Lobe / Q000473:pathology / Q000601:surgery; D006801:Humans; D010291:Paresis / Q000209:etiology / Q000473:pathology / Q000601:surgery; D010296:Parietal Lobe / Q000473:pathology / Q000601:surgery; D016896:Treatment Outcome