title: Astrocytomas arising in the tectal region of the mesencephalon: report of two cases.
abstract: Astrocytoma arising from the tectum of the mesencephalon is an unusual tumor that is different from other brain stem tumors in clinical features. We describe two patients with tectal low-grade astrocytoma. Each patient underwent CSF diversion and biopsy followed by radiation therapy. A review of the literature on the clinical, radiographic, and pathological findings and the management of tectal tumor is presented.
authors.affiliation: Department of Neurosurgery, University of Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Toyoda
authors.forename: M
authors.initials: M
authors.lastname: Matsutani
authors.forename: K
authors.initials: K
authors.lastname: Kawai
authors.forename: Y
authors.initials: Y
authors.lastname: Iwasaki
authors.forename: T
authors.initials: T
authors.lastname: Kirino
mesh_terms: D000293:Adolescent; D001254:Astrocytoma / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D002533:Cerebral Angiography; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D003336:Tectum Mesencephali / Q000473:pathology* / Q000528:radiation effects / Q000601:surgery; D014055:Tomography, Emission-Computed; D014057:Tomography, X-Ray Computed; D017287:Ventriculoperitoneal Shunt