Subfrontal Schwannoma

A Case Report of Subfrontal Schwannoma

Ⅰ．はじめに

　Solitary Schwannomaは全頭蓋内腫瘍の8-9％を占め，中年以降に多い^3，4）．好発部位としては聴神経に圧倒的に多く，ついで三叉神経にもみられる．その他の部位での発生は極めて稀であり，顔面神経^2），舌咽神経^3）の各1例や脳内の2例^1，8）の報告がある．最近我々は26歳女性でSubfrontal（extracerebral）Schwannomaの1例を手術全摘し治癒せしめたが，このような症例は現在までの文献にはみられず，極めて稀と考え報告するとともに，その病理発生についても若干の文献的考察を加える．

It is well known that the solitary Schwannoma occurs particulary in the middle decade of life and most frequently on the eighth nerve. A few cases of Schwannoma arised from other cranial nerves, the fifth, seventh and ninth nerve, have been reported in the literatures. This report describes a very rare case of extracerebral solitary Schwannoma grown in the anterior cranial fossa.26 years old woman had experienced first convulsive seizure on May 20th 1973. Left carotid angiography showed large tumor in the left anterior cranial fossa across the mid line.