The main risk factors of rectal cancer

summary

At present, rectal cancer will bring inconvenience to many people, and thus harm the health of patients. We need to know more about rectal cancer, especially the pathogenic factors of rectal cancer. What are the inducing factors of rectal cancer? Let's take you to know.

The main risk factors of rectal cancer

1. Dietary factors: the so-called Western diet with high fat, high protein and low fiber is considered to be related to the cause of rectal cancer. The incidence of colorectal cancer is high in western countries. The incidence rate of rectal cancer is high. Compared with the crude foods of the low fat and cellulose rich in the south of the tribe, the incidence of rectal cancer is low. The incidence rate of these residents increased with the change of diet structure when they migrated to the high incidence area of rectal cancer. Because high fat and high protein food can increase the content of methylcholanthrene in feces, which can increase the secretion of cholic acid and be decomposed into unsaturated polyunsaturated hydrocarbons by intestinal anaerobes. The decrease of cellulose also slows down the speed of feces passing through the intestine, increases the contact time between these carcinogens and the intestinal conjunctiva, and increases the chance of canceration. This is a common cause of rectal cancer.

2. Adenoma canceration: neoplastic polyp can be cancerous, adenoma can be divided into three types: tubular adenoma, villous adenoma and mixed adenoma, which are common causes of rectal cancer. 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.

3. Genetic factors: in the families of rectal cancer patients, there are many family history of cancer, and there are also many digestive tract tumors. Due to the genetic changes of normal cells, the patients with cancer get a kind of susceptibility by heredity. With some stimulating factors, the tissue cells grow rapidly, and then they will develop into cancer. Cell genetic gene mutation will turn into malignant cells with genetic characteristics A family history of cancer. This is also a common cause of rectal cancer. Inflammatory bowel disease, ulcerative colitis and Crohn's disease, due to the destruction of intestinal mucosa, ulcer repair proliferation, granulation tissue formation in the process of carcinogenesis. The eggs of Schistosoma japonicum are deposited in rectal mucosa, and chronic inflammation stimulates carcinogenesis.

matters needing attention

After reading the above knowledge, we realized the causes of rectal cancer disease, rectal cancer brings pain, and affects the lives of patients, so that their intestines are hurt, friends should be on guard against the emergence of rectal cancer, should stay away from the pathogenic factors of the disease, pay attention to the prevention of rectal cancer.