title: Acoustic cellular schwannoma invading the petrous bone: case report.
abstract: Cellular schwannoma, a variant of benign schwannomas characterized by a high pseudosarcomatous cellularity, rarely involves the cranial nerves. In this report, we present the case of a 74-year-old woman with a cellular schwannoma of the VIIIth cranial nerve, which recurred from an ordinary schwannoma resected 9 years before. The tumor has been controlled for 35 months by a simple re-excision, indicating the benign nature of this tumor, although the tumor showed bone destruction and a high MiB-1 labeling ratio.
authors.affiliation: Department of Neurosurgery, University of Hokkaido, Sapporo, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Ishii
authors.forename: Y
authors.initials: Y
authors.lastname: Sawamura
authors.forename: M
authors.initials: M
authors.lastname: Tada
authors.forename: H
authors.initials: H
authors.lastname: Abe
mesh_terms: D000818:Animals; D005260:Female; D008279:Magnetic Resonance Imaging; D009361:Neoplasm Invasiveness; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D009464:Neuroma, Acoustic / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D010579:Petrous Bone / Q000473:pathology / Q000601:surgery*; D012086:Reoperation; D014057:Tomography, X-Ray Computed; D000159:Vestibulocochlear Nerve / Q000473:pathology / Q000601:surgery