Summarizing the major causes of rectal cancer

Rectal tumors have become a major disease that threatens human health. What are the causes of rectal tumors? Experts summarize as follows:

1. Viral infection

It has been confirmed that viral infection can cause tumors. Virus bodies can be seen in benign and malignant tumors, but which type of viruses are carcinogens is still under study. There are many types of viruses that can induce tumors, and they are widely present in nature, but they can only cause cancer under certain conditions.

2. Family genetic factors

The transmission of the gene change can run in families.

3. Malignant transformation of benign tumors

Under certain conditions, familial rectal polyposis, rectal adenoma, papilloma, etc. are also factors that cause rectal tumors.

4. Impact of sexually transmitted diseases

Unhygienic sexual intercourse can cause genital warts or papillary fibroma in the anus, and long-term friction and stimulation can cause cancer.

5. Dietary factors

A high-fat, high-protein, low-fiber diet is a very common factor in the development of rectal tumors. This is because high-fat foods can increase bile secretion and promote the growth of intestinal bacteria. Under the action of anaerobic bacteria, cholesterol and bile salts form unsaturated cholesterol, such as deoxycholic acid and lithocholic acid. The increase in the number of these two carcinogens promotes the development of rectal tumors. At the same time, too little dietary fiber intake slows down intestinal peristalsis, and feces and other wastes stay in the intestines for too long, irritating the intestinal mucosa and causing rectal tumors.

6. Abnormal immune function

Abnormal human immune function, such as suppression of cellular immune function, is common in patients. As the cellular immune reactivity decreases, the incidence of cancer increases. Suppression of cellular immune function is a major factor in the occurrence and development of colorectal tumors.

7. Chronic inflammatory stimulation

Long-term chronic inflammation may be a factor in the development of rectal tumors. For example, chronic bacterial infection, amoebic dysentery, chronic nonspecific colitis, diverticulitis, etc., can cause the mucosa to undergo granuloma, inflammatory changes, and pseudopolyp stages, leading to cancer. Among them, the colon mucosa of schistosomiasis patients is stimulated by deposited eggs for a long time, causing necrosis, shedding, and even ulceration. Then, polyps occur on the basis of epithelial regeneration and hyperplasia, leading to cancer. In addition, long-term stimulation of the anal skin by hemorrhoids, anal fistulas, anal fissures, suppurative hidradenitis, folliculitis, etc. can also cause cancer.

There are many factors that cause rectal tumors. Some susceptible people should learn more about this aspect and do a good job in prevention and health care.

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