レ線深部治療の特効的であつた第4脳室エペンデイモーマ

EPENDYMOMA OF THE 4TH VENTRICLE SHOWING REMARKABLE SENSITIVITY TO THE X-RADIATION

　従来良性工ペンデイモーマに対してはレ線深部治療は無効と考えられているが，最近我々は第4脳室に発生したエペンデイモーマにてレ線深部治療が劇的効果を示した1例を経験したのでその臨床所見の概要を述べ考察する。

A case of tumor of 4 th ventricle in a 35 year old woman is reported.

The patient had complained of paroxysmal headache, vomiting and vertigo and during the course of her illness pressure symptoms of the brain stem, too, such as diplopia (abd-ucens paralysis), peripheral facial paralysis, auditory and vestibular disturbance and pare-sthesia of mouth etc, were seen. Tumor of the 4 th ventricle was suspected and she was treated with X-radiation therapy which was so effective that one or two treatments with radiation resulted in almost complete disappe-arance of the above subjective symptoms. The symptoms, however, reappeared after 1 1/2 year and a second course of X-radiation therapy had a similar surprising effect.

The patient was of a highly nervous and hysterical nature and would not permit fur-ther detailed X-ray examination and as the X-ray therapy had such a dramatic effect, an accurate diagnosis could not be made while patient was still alive.

Tumor formation in the 4 th ventricle was confirmed at autopsy and histologically it was benign ependymoma (not ependymoblastoma).