Is rectal cancer highly contagious?

Nowadays, more and more people are suffering from rectal cancer. As a malignant tumor disease, it makes patients suffer from pain for a long time, which is very painful. Many people are worried that they will be infected if they come into contact with rectal cancer patients, so they are unwilling to get close to patients, which brings psychological shadows to patients and also affects the treatment of the disease. So, is rectal cancer highly contagious? Let's take a look at the relevant analysis of experts.

Rectal cancer is not contagious. For it to be contagious, three conditions must be met: a source of infection, a route of transmission, and a susceptible population. Clinical data have proven that cancer patients themselves are not a source of infection.

What are the causes of rectal cancer?

1. Chronic rectal inflammation

Chronic ulcerative colitis and granulomas caused by chronic schistosomiasis are directly related to the occurrence of colorectal cancer. The longer the course of the disease, the higher the possibility of colorectal cancer. The incidence of colorectal cancer in patients with ulcerative colitis for more than 20 years is about 20% to 40%.

2. Rectal adenoma cancer

The third cause of colorectal cancer. Diet and carcinogens: Epidemiological studies have shown that the occurrence of colorectal cancer is significantly related to economic conditions and dietary structure. The incidence rate is significantly higher in economically developed areas, areas and groups where the diet has a high proportion of animal fat and protein and a low fiber content. The exact mechanism of the relationship between dietary structure and the occurrence of colorectal cancer is not yet fully understood. It is generally believed that it may be related to factors such as the metabolites of animal fat, bacterial decomposition products, and the slowing of intestinal peristalsis and increased intestinal toxin absorption due to a low-fiber diet.

3. Genetic factors

Except for patients with colorectal cancer caused by familial polyposis or malignant transformation of ulcerative colitis, about five to ten percent of other colorectal cancer patients have a clear family history of tumors, collectively referred to as hereditary non-familial polyposis colorectal cancer, also known as syndrome.