脳梁腫瘍の1例

TUMOR OF THE CORPUS CALLOSUM:A CASE REPORT

I．まえがき

　脳梁腫瘍は従来から，特徴的な神経学的症状を欠くため，その診断は困難なもののひとつとされている。そして脳室撮影あるいは脳血管撮影により，その特有な所見から初めて脳梁腫瘍と診断される場合が多い。

　われわれは最近，長期間，頭部外傷後遺症あるいはクモ膜下出血と診断されていたが，入院後，神経学的所見から一時は後頭蓋窩腫瘍が疑われ，脳血管撮影および脳室撮影により初めて脳梁腫瘍と診断した症例を経験した。ここにその手術経験を報告するとともに若干の考察を加えてみたいと思う。

The 28 year old male patient was hospita-lized because of complaints of attacks of syn-cope, obesity and disturbance of gait.

1) These symptomes were considered to be the sequelae of head injury at first, becau-se they became manifest after head injury.

Neurological examination, however, lead to a suspicion of an infratentorial brain tumor.

2) Further studies by cerebral angiography and ventriculography demonstrated a tumor of the corpus callosum. The cerebral angio-graphy and ventriculography serve greatly to make the diagnosis of tumor of the corpus callosum.

In this case the cerebral angiography sho-wed displacement of the anterior cerebral arte-ry, particularly pericallosal artery, which was sufficiently diagnostic of the tumor of the corpus callosum.

The ventriculography revealed wide sepa-ration of the right and left lateral ventricles with tumor shadow of hen's egg in size in the cella media of the lateral ventricle.

3) Most of the tumor was removed by surgery. Histopathological examinations yiel-ded diagnosis of astrocytoma.

4) Presently at about six months postope-ratively there is no remarkable evidence of recurrence.