脳内動静脈瘻に接して発生した脳膿瘍の1例

A CASE OF THE BRAIN ABSCESS DEVELOPED IN CONTACT WITH INTRACEREBRAL ARTERIO-VENOUS FISTEL

I．はじめに

　脳膿瘍に関しては古くから多くの記載がみられるが，その原因として最も多いのは，耳性膿瘍で，ついで鼻性外傷性，転移性，肺性，心臓性，顔面性，手術後等があげられる。

　しかしながらその原因がまつたく不明の場合も少なくない^1）。われわれの教室においても，柱外科教室時代から28例の脳膿瘍を経験しているが，そのうち10例が発生原因の不明なものであつた。

Recently, we had a case of 4 years old boy with brain abscess which was found in occipital area of right side and was about the size of over an egg.

As the operative finding showed us, the abscess developed in contact with an arterio-venous fistula closely and it had the deposition of calcium on the arterial wall that was found as an arch shadow on right occipital area by simple X-photography. Total resection of abscess and of A-V fistula was done under the intratrachial anaesthesia. fie recovered without any postoperative disturbance and left our hospital on 23 postoperative days. We could not recognized any infectious forcus and aerobic or anae-robic culture of the content of abscess were negative.

We considered on the genesis of this abscess thai it developed by bacillus in blood circulatation, clinged at a part of the A-V fistula of abnormal vortical blood flow.

Detail of his course was herein reported.