不随意運動を呈した脳腫瘍の2例

TWO CASES OF BRAIN TUMOR WITH INVOLUNTARY MOVEMENTS

I．緒言

　古くから舞踊病やアテトーゼの発現機序に関する研究がなされ，病理面や生理面での解析が行なわれてきた。そのなかのひとつとしてBucy （1942）^7）の説はこれを解釈する上にかなり役だつ説明となつている。一般的には形態的にも機能上からも密接な関係下にある皮質と，基底核が形成する回路の遮断によつて特有な不随意運動が惹起するとされている。

　一方，脳腫瘍を原因として発現してくる不随意運動は比較的稀ではあるがすでにChorobski^9），　Sciarra　＆　Sprofkin^28）や，本邦では牧^30）らによつてかかる症例および統計が発表されている。

We reported two cases of brain tumors which had shown the involuntary mevement, as the main clinical feature:

1) A 32-year-old woman, who became right finger tremor generalized on the right side of the body. At the time of admission, showed tremor, hyperreflexia, hypertonia, facial paresis on the right side and slightly psychic disturbance.

Laboratory data suggested us meningioma in the left frontotemporal region.

2) 5 years prior to admission, A 29-year-old woman had choreic movement in the her left hand. Thenafter ataxia, disturbance of gait, diplopia and nystagmus appeared. After admission, these sym-ptoms became progressive worse finally astasia and abasia appeared.

General weakness and disturbance of swallowing tended her death. Angioma of the ports was diagno-sed by autopsy.

3) As for involuntary movement without direct lesion of basal ganglia, we concluded that finger tremor is caused compression to basal ganglia by tumor and choreic movement is clue to interruption of the tegmentospinal tract.