遗传性出血性毛细血管扩张症 (ｈｅｒｅｄｉ ｔａｒｙｈｅｍｏｒｒｈａｇｉｃｔｅｌａｎｇｉｅｃｔａｓｉａ)是血管发育异常所引起的一种以毛细血管壁缺乏弹性纤维而扩张变薄 ,易发生内脏出血等症状的常染色体显性遗传病。男女患病机率均等。本病在欧洲人群中年发生率约为 1～ Here, the hereditary hemorrhagic telangiectasia is an autosomal dominant genetic disorder caused by abnormal vascular development, which is characterized by the dilatation and thinning of the capillary wall with the lack of elastic fibers and the occurrence of visceral hemorrhage and the like. The same is true for both men and women. The incidence of this disease in the European population is about 1 ~