脳腫瘍による不随意運動に関する考察

INVOLUNTARY MOVEMENTS IN PATIENTS WITH INTRACRANIAL TUMORS

I．緒言

　Bailey et al．（1939）が1側性線状体腫瘍の2症例になんら基底核傷害に相当する臨床症状を呈さぬのははなはだ興味があると述べているごとくいわゆる，基底核部の腫瘍がAthetosis, Torsion Spasm, Torsion Dystonia, Rigidity, Mask—facies等の一連の症状を呈さぬ事実は，大方の興味を惹き，その種の報告は枚挙にいとまがない。

　一方腫瘍によつて惹起された不随意運動は比較的まれなのと，経過中に多彩な他の神経学的諸徴候におおわれて見逃しやすいことと，もし認めても，単に脳腫瘍が偶発的な共存と考えられやすいことなどから，一般に等閑視される傾向にあり，そのためか本邦においては特にとりあげた報告をいまだにみていない。

A 51 year old male case of the parasagittal meningioma with the symptome of Parkinso-nism is reported.

77 cases of the intracranial tumor with the involuntary movement are collected from the literatures being discussed following:

1) About the relationship beween the loca-tion and the type of the tumor, the cases of the hyperkinetic involuntary movements are always found itself with the partial invol-ving of the basal ganglia, however the cases of the Parkinsonism are without the particu-lar containment.

2) The type of the tumor and the kind of involuntary movement are related, i. e. the hyperkinetic movement is caused almost by the glioma, but never by the meningioma, while the Parkinsonism is caused usually by any type of the tumor.

3) The mechanism of the involuntary mo-vement caused by the brain tumor seems to be induced by the compression and the other unknown factors of the case.