先天性是因血管发育畸形，在动静脉之间形成的不经过毛细血管的直接通路，常为多发性和弥漫性病变。
Congenital malformations, blood is because in arteriovenous formed between capillary directly without access to multiple and diffuse disease.
先天性是因血管发育畸形，在动静脉之间形成的不经过毛细血管的直接通路，常为多发性和弥漫性病变。
Congenital malformations, blood is because in arteriovenous formed between capillary directly without access to multiple and diffuse disease.
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