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家族性腺瘤性息肉病（ｆａｍｉｌｉａｌａｄｅｎｏｍａｔｏｕｓｐｏｌｙｐｏｓｉｓ，ＦＡＰ）是１种比较少见的遗传性大肠疾病，符合Ｍｅｎｄｅｌｉａｎ定律，属常染色体显性遗传，外显率为８０％～１００％［１］。一般认为ＦＡＰ是基因突变引起的，基因定位于５号染色体的长
Familial adenomatous polyposis (familial adenomatous polyposis, FAP) is a relatively rare hereditary colorectal disease, consistent with Mendelian law, is an autosomal dominant inheritance, penetrance is 80% to 100% [1]. It is generally believed that FAP is caused by a gene mutation and the gene is located on the length of chromosome 5.