家族性息肉病，结肠黏膜表面长满了小腺瘤息肉。当然，即使它们现在很小，但随着时间的推移也有100%的危险发展成腺癌的，因此，通常20岁前作全结肠切除术。
This is familial polyposis in which the mucosal surface of the colon is essentially a carpet of small adenomatous polyps. Of course, even though they are small now, there is a 100% risk over time for development of adenocarcinoma, so a total colectomy is done, generally before age 20.
