What factors cause rectal cancer

Experts say that rectal cancer is a highly malignant digestive tract disease. Middle-aged and elderly people are at high risk of rectal cancer. The cause of rectal cancer is still unclear. It is mainly related to unreasonable diet structure, social environmental factors and genetics. In life, everyone should do a good job in preventing rectal cancer to reduce harm to the body.

What are the causes of colorectal cancer?

1. Environmental factors: What are the causes of colorectal cancer? The onset of colorectal cancer is related to lifestyle and diet, especially diet. High-fat diet and insufficient dietary fiber are the main causes of the disease. High-fat diet, especially foods containing saturated fatty acids, can promote the synthesis of cholesterol and bile acid in the liver, increase the amount of cholesterol entering the intestinal cavity, and transform it into cholesterol metabolites and hypocholelic acid by colon bacteria, which have carcinogenic effects.

2. Inflammatory bowel disease: Patients with ulcerative colitis are much more likely to develop colorectal cancer than ordinary people. This is more common in patients with a wide range of lesions and a long course of disease at a young age. Cancer often occurs in the flat mucosa. In the process of the development of inflammatory proliferative lesions, polyps are often formed, which further develop into colorectal cancer. In case of Crohn's disease, those with colon and rectum involvement can also develop into cancer.

3. What are the causes of schistosomiasis and rectal cancer? There is a significant difference in the incidence and mortality of rectal cancer in schistosomiasis-endemic areas and non-endemic areas. In the past, it was believed that patients with chronic schistosomiasis had chronic ulcers of the colorectal mucosa, inflammatory polyps, etc. due to the deposition of schistosome eggs in the intestinal wall and stimulation by toxins, which in turn caused cancer.

4. Polyps: What are the causes of rectal cancer? Most rectal cancers develop from small precancerous lesions, and the main cause of the disease is unhealthy polyps. Among them, villous adenomatous polyps are more likely to develop into cancer, with a cancer incidence rate of about 25%; tubular adenomatous polyps have a malignant transformation rate of about 3%;.

The above introduces the causes of rectal cancer. I believe everyone is already clear about it. Experts say that the symptoms of early rectal cancer are not obvious, so regular physical examinations are very helpful in detecting rectal cancer. The current treatment method for rectal cancer is mainly surgical treatment. After the operation, the patient's care should be done well to ensure that the condition recovers as soon as possible.