Is adenomatous intestinal polyp a cancer?
Is adenomatous intestinal polyp a cancer? Cancer is an extremely horrible disease in people''s minds, so many people are very afraid of going to the hospital, but whenever there are some serious diseases, they will automatically be linked to cancer. Adenoma is a A very common type of intestinal polyp with a high rate of canceration, so is adenomatous intestinal polyp a cancer?
Intestinal polyps refer to a type of neoplasm that protrudes from the surface of the intestinal mucosa, regardless of Its size, morphology and histological type. Intestinal polyps include hyperplastic polyps, inflammatory polyps, hamartomas, adenomas, and so on. Therefore, intestinal adenoma is a type of intestinal polyp. There is also a classification method that divides polyps into neoplastic polyps according to histology. Adenomas are neoplastic polyps, while hyperplastic polyps, inflammatory polyps, and hamartomas are non-neoplastic polyps.
Adenomas are likely to become cancerous, and their canceration rate is mainly related to the type and size of adenoma and the degree of epithelial dysplasia. The canceration rate of tubular adenoma is <5％, the canceration rate of tubular villous adenoma is 23％, and the canceration rate of villous adenoma is as high as 30％～70％. The canceration rate of adenomas with a diameter of 0.5cm is ≤0.1％, the canceration rate of <1cm is 1％～3％, 1& 2cm is 10％, and>2cm is 30& #xFF05;～50％. Therefore, adenomatous intestinal polyps are not necessarily cancer, but mainly depend on the presence or absence of cancer.
Adenoma with mild epithelial dysplasia has a low cancerous rate. If it is severe epithelial dysplasia, the cancerous rate can reach 27％. Current research believes that 80% of intestinal cancers are evolved from adenoma, so all adenomas should be removed if they are found by examination.
Adenoma is sometimes difficult to identify with the naked eye and other intestinal polyps during colonoscopy, so basically polyps will be removed, and then a pathological examination will be performed to determine whether it is an adenoma. After the tumor is removed, more than 30% of the patients will grow new adenomas, so these patients are still high-risk groups after treatment and need close observation.
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