脑动静脉血管畸形(英文:cerebral arteriovenous malformation,简称cAVM)是一种由于胚胎发育过程中的异常,造成脑部出现动静脉血管直接连接的先天性畸形,主要病征是脑部血管不正常聚集,使动脉内的血液不经微血管而直接注入静脉,形成一种高流速及高压力的血液短路,继而增加脑内出血中风的机会。

脑血管造影是诊断脑动静脉畸形的重要手段。MRI核磁共振成像、CT有助诊断。

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