透明中隔腫瘍の2摘出成功例

TUMOR OF THE SEPTUM PELLUCIDUM:Two Cases Report

I．緒言

　透明中隔腫瘍は，従来比較的稀れなものとされていたが，最近では診断学の進歩により，それほど少ないものではないといわれるようになつてきた。1948年French ＆　Bucy^1）が自験例5例と文献から31例をまとめて発表し，その後Chusid^2），　Hughes^3）　Epstein^4），　Castaigne^5）らによつて，私どもの知るかぎりでもすでに77例報告があり，また最近ソ連のLikhterrrannが36例をまとめて発表し，脳波，脳室撮影によつて分類している。しかし，これを開頭手術により摘出した症例は少なく，Riskaer, Puusepp, French, Caulらにより報告されてしるが，10例に満たない現況である。

　一方わが国では1958年喜多村^6）が本症の5例を発し，その症状をくわしく検討したが，これらはいずれも摘出例ではなく，摘出成功例としては戸田^7），佐藤^8），形^9）の報告をみるのみである。

This paper is the presentation of two cases of sur-gically removed tumors of the septum pellucidum.

Case 1. A 20-year-old woman was admitted to our clinic with the complaints of nausea, headache, visual disturbance for three months.

Examination revealed choked disks, left abducens paresis and abnormal E.E.G. Pneumoventriculography showed a filling defect between the bodies of the dilated lateral ventricles. Tumor of the septum pelluci-dum was suspected. The right frontal craniotomy was made and the tumor of the septum pellucidum was removed. The pathological diagnosis was Grade I astrocytoma.

Case 2. A 37-year-old man was admitted to our clinic, complaining of headache, visual disturbance, impaired hearing and attacks of syncope for eight months. The patient was apathetic and examinations revealed bilateral choked disks, hypasthesia of the left half of the body and disturbances of memory and calculation. Pneumoventriculography showed separated bilateral lateral ventricles where the tumor stain was found by carotid angiography. The tumor weighing 87 grm. was totally removed. The pathological diag-nosis was Grade III astrocytoma.

At present, about one year after in the first case and about five months after the operation in the second case, there is no evidence of recurrence.

The review of the literature, and also syndrome, diagnosis and therapy of these two cases were discu-ssed.