Subfrontal schwannoma: a case report]
No shinkei geka. Neurological surgery(1991)
Abstract
A case of a 63-year-old woman with subfrontal schwannoma of the left side is presented. The patient had a two-month history of recent memory disturbance and unstable gait. Computed tomography represented an isodense mass lesion with large and small cystic components in the anterior cranial fossa, enhancing homogeneously after intravenous injection of contrast medium. Cerebral angiograms revealed a noticeable hypovascularity. She underwent total resection of the tumor on May 21, 1986. It was verified that the tumor was attached to the left olfactory groove and had invaded the ethmoid bone. It was suggested that this tumor arose from one of the meningeal branches of the trigeminal nerve or of the anterior ethmoid nerve. Histological examination proved that this neoplasm was of schwannoma.
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Key words
subfrontal schwannoma,case report
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