What causes rectal cancer?

Update Date: 2022-08-02 Source: Network

summary

Rectal cancer refers to the cancer from the dentate line to the junction of rectum and sigmoid colon. It is one of the most common malignant tumors in digestive tract. The location of rectal cancer is low, so it is easy to be diagnosed by digital rectal examination and sigmoidoscopy. What causes rectal cancer? Next, I'd like to share my views with you.

What causes rectal cancer?

Genetic factors: in the families of rectal cancer patients, many have a family history of cancer, and there are also many digestive tract tumors. Due to changes in the genes of normal cells, the patients with cancer get a kind of susceptibility by heredity. In addition, some stimulating factors make the tissue cells grow rapidly, and they will develop into cancer, A family history of malignant cells with genetic characteristics.

Adenoma canceration: neoplastic polyp can be cancerous, adenoma can be divided into three types: tubular adenoma, villous adenoma and mixed adenoma. The incidence of tubular adenoma and villous adenoma is high. There are hereditary familial adenomas in adenomas, which are regarded as precancerous lesions. They usually develop after 30 years old, but there are also cancerous changes before 20 years old.

Dietary factors: the so-called Western diet with high fat, high protein and low cellulose is considered to be related to the occurrence of rectal cancer. The incidence rate of colorectal cancer is high in western countries. The incidence of rectal cancer in South Africa is low.

matters needing attention

Dietary fiber intake can reduce the incidence rate of colorectal cancer, probably because the absorption of dietary cellulose is strong, which can increase the volume of feces, make stool shape, facilitate defecation, reduce the concentration of carcinogenic substances in the intestine, thereby reducing the risk of colorectal cancer. Therefore, on the premise of maintaining the same amount of staple food, some coarse grains should be used to replace fine grains, such as konjac, soybean and their products.