What is the cause of rectal cancer

What are the causes of rectal cancer? How to prevent rectal cancer? As we all know, rectal cancer is a very common disease among malignant tumors. It is also very harmful to people's health and seriously threatens our lives. So what aspects should we pay attention to in the causes of rectal cancer?

What are the causes of rectal cancer?

Experts say that to prevent colorectal cancer, we must first treat its main causes. Understanding the following knowledge will surely help you in your prevention work.

The main causes of colorectal cancer:

First, history of colon inflammatory diseases: Certain colon diseases such as Crohn's disease or ulcerative colitis may increase the chance of colorectal cancer. Their risk of colon cancer is 30 times that of ordinary people.

Second, history of colorectal polyps: Most colorectal cancers develop from small precancerous lesions, which are called polyps. Among them, villous adenomatous polyps are more likely to develop into cancer, with a chance of malignant transformation of about 25%; the malignant transformation rate of tubular adenomatous polyps is 1 to 5%.

Third, age: As age increases, the time that various pathogenic factors stimulate the large intestinal mucosa also increases. Most patients develop the disease after the age of 50.

Fourth, genetic background: familial adenomatous polyposis and hereditary non-polyposis carcinoma are caused by mutations in the corresponding genes. These patients not only have a significantly increased risk of developing the disease, but also develop it at a younger age.

Fifth, family history: If a person's first-degree family member, such as a parent, has had colorectal cancer, his or her lifetime risk of developing the disease is eight times higher than that of the general population. About a quarter of new patients have a family history of colorectal cancer.

The editor has told you five aspects about the causes of rectal cancer. I believe that everyone may have the correct answers in their minds about the causes of colorectal cancer and how to prevent rectal cancer. Experts remind everyone that if you find any physical discomfort, you must go to the hospital for examination as soon as possible.