脑血管畸形是一团异常的血管。命名很多,如动静脉畸形、动静脉瘤、血管瘤、动静脉动脉瘤、血管性畸形等。其容积虽可因局部病理血液循环而继发增大,但因为它没有肿瘤细胞,故和肿瘤组织增大的性质不同。其病因一般公认是血管发育异常。也有人认为脑血管畸形是在脑外伤的影响下, Cerebrovascular malformations are an abnormal group of blood vessels. Naming many, such as arteriovenous malformations, aneurysm, hemangioma, arteriovenous aneurysm, vascular malformations. Although its volume may be due to local pathological blood circulation and secondary increase, but because it does not have tumor cells, so the nature of the tumor tissue increases. The etiology is generally recognized as vascular dysplasia. Some people think that cerebrovascular malformations are under the influence of traumatic brain injury,