[Intracranial extracerebral glioma].
A case of solitary leptomeningeal extracerebral glioma is reported. A 75-year-old man was admitted to our hospital because of headache and right hemiparesis. CT scan and carotid angiography revealed a tumor in the left convexity. At operation, the tumor was located between the dura mater and the arachnoid membrane and adhered to the brain surface only in a limited area. Histological study including immunostain and electron microscopy showed the tumor as anaplastic oligo-astrocytoma. We speculate that our case may originate from a heterotopic glial nest in the dural border cell layer of dura mater. This explanation seems likely because the tumor was located mostly in the subdural space.
Oka
H
H
Department of Neurosurgery, Kawasaki City Ida Hospital.
Kawano
N
N
Morii
S
S
Suwa
T
T
Irikura
K
K
Saitoh
T
T
D000368:Aged; D001921:Brain / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D005910:Glioma / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008577:Meningeal Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D008854:Microscopy, Electron; D014057:Tomography, X-Ray Computed