外傷性前大脳動脈閉塞

Post-traumatic Occlusion of the Anterior Cerebral Artery

I．はじめに

　頭部外傷が原因で発生する脳血管障害は比較的稀なもので^6,22），脳血管閉塞，脳動脈瘤，脳動静脈瘻，脳血管攣縮などが報告されている．われわれは最近軽微な頭部外傷後に左前大脳動脈領域に限局性の脳梗塞をきたし傍脳梁動脈の進行性狭窄を生じた症例を経験したので，若干の文献的考察を加えて報告する．

A rare case with cerebral infarction in the region of the anterior cerebral artery after minor head injury is reported.

A 44-year-old male sustained a blow in the occipital area and became unconscious for a moment when he was driving a car and was involved in a rear-end colli-sion. There being no significant signs, he drove home. About 30 minutes after the traffic accident, he felt weakness in the right limbs and speech difficulty and immediately visited our clinic.

The patient was alert, but right hemiparesis and mild motor aphasia were present. There was no apparent evidence of head injury.