Introduction to the three major causes of rectal cancer

Rectal cancer is a common gastrointestinal disease, which is mostly related to dietary habits and genetic factors. At present, the incidence of rectal cancer is gradually increasing. Most people are not clear about the cause of rectal cancer, and they do not receive timely treatment, which delays the disease. So what are the causes of rectal cancer ? The following is a detailed answer from relevant experts.

1. The so-called Western diet, which is high in fat, protein and low in fiber, is considered to be one of the causes of colorectal cancer. Western countries are high-incidence areas for colorectal cancer, and the incidence of colorectal cancer is high. In contrast, the Banti tribe in South Africa consumes low-fat and fiber-rich rough food, and the incidence of colorectal cancer is low. If these residents immigrate to areas with a high incidence of colorectal cancer, the dietary structure will change, and the incidence will increase accordingly. Because high-fat and high-protein foods can increase the amount of methylcholanthracene in feces, it can cause increased bile acid secretion, which is decomposed into unsaturated polyunsaturated hydrocarbons by anaerobic bacteria in the intestines. Both of these substances are carcinogens. The reduction in the amount of fiber slows down the speed of feces passing through the intestines, which increases the contact time between these carcinogens and the intestinal conjunctiva, leading to an increase in the chance of cancer.

2. Adenoma can become cancerous. Adenomatous polyps can become cancerous. Adenomas can be divided into three types: tubular adenomas, villous adenomas, and mixed adenomas. Tubular adenomas have a high incidence rate, and villous adenomas have a high rate of canceration. Among adenomas, there are hereditary familial adenomas, which are considered precancerous lesions. They usually occur after the age of 30, but some people may become cancerous before the age of 20.

3. Inflammatory bowel disease, such as ulcerative colitis and Crohn's disease, can cause canceration during the process of intestinal mucosal destruction, ulcer repair and proliferation, and granulation tissue formation. Schistosomiasis eggs are deposited in the rectal mucosa, and chronic inflammation can cause canceration.

The above is an introduction to the causes of rectal cancer. I believe everyone should have a certain understanding of rectal cancer. If you want to know more about rectal cancer, please consult online experts.

For more information, please visit the rectal cancer disease special topic at http://www..com.cn/zhongliu/zca/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.