Familial adenomatous polyposis (FAP) is an autosomal dominant syndrome caused by a germline mutation of the adenomatous polyposis coli (APC) gene. Several extracolonic lesions, especially gastric lesions including fundic gland polyp (FGP), adenoma roughly corresponding to low-grade dysplasia, and adenocarcinoma, have been frequently associated with FAP.

中文翻译：

---

家族性腺瘤性息肉病中的胃肿瘤：有或无萎缩性胃炎患者的随访策略

家族性腺瘤性息肉病 (FAP) 是一种常染色体显性遗传综合征，由腺瘤性息肉病大肠杆菌 (APC) 基因的种系突变引起。一些结肠外病变，尤其是胃部病变，包括胃底腺息肉 (FGP)、大致对应于低度不典型增生的腺瘤和腺癌，经常与 FAP 相关。