内頸動脈脳底部異常血管像を示す3症例についての検討

SOME REFERENCES TO 3 CASES WITH ABNORMAL VASCULAR NETWORK IN THE CEREBRAL BASAL REGION

I．はじめに

　脳底部に異常血管網を示す症例は最近，日本神経学会^1）3）をはじめ，脳神経外科^4），神経放射線懇話会^5）6）において急激にその数を増し，成因については血管奇形説^7），側副血行説^8），teleangiectasia^9）あるいは一次的にウィリス輪閉塞症^10）とする考えがあり，現在なお剖検例が少ないため，本態の解明にはさらに検討が望まれる。

　われわれは，これまでに従来報告された本症例類似疾患と考えられる3症例を経験し一部はすでに発表したが，今回これを総括し，本態解明の一助になれば幸甚と考え，報告する。

The clinical cases with abnormal vascular network in the cerebral basal region have increased in number, recently, in Japan.

According our investigations, 48 cases, including our 3 cases have been reported up-to-date.

However, the real causes of these disease are still unknown.

Concerning about the causes of this unknown dis-ease, we have some theoretical ideas to explain of,

1) vascular malformation theory, 2) collateral cir-culation theory, 3) cerebral teleangiectasia theory, 4,) obstractive disease of circle Willis.

We reported 3 cases in this paper, 19 & 26 years old male patients and 39 years old female patient.

Characteristic findings of cerebral angiograms in these patients are 1) obstractive changes in anterior or middle cerebral arteries, frequently in both arteries and 2) appearence of abnormal vascular network in the cerebral basal region.

At the same time, they have some neurological symptoms : paralysis, paresis, headache, convulsion, speech difficulties, involuntary movement, dizziness, tinnitus and so on.

We tried to make some references to these undefi-nite disease to clarify the true causes.