Polyp — It outgrowth mucosa of the intestinal wall. Polyps colon may be single or multiple, arranged on the leg or on a broad basis ("chairs"). Depending on the shape and structural features distinguish the different types of polyps. In particular, distinguish inflammatory polyps (appearing on the site of inflammation), hyperplastic (the result of excessive proliferation of normal tissue) and neoplastic (overgrowth of atypical (abnormal) cells). The latter may be either benign or malignant.
By polyps colon Coloproctologists attracted the attention of the world as bowel cancer in the vast majority of cases develop from benign polyps (adenomas). The worst type from the point of view of the development of cancer — villous polyps, which are growths on the wall of the intestine resemble carpet: the incidence of malignant tumors of such a polyp is 40%.
The polyps are fairly common: at
An important role in the development of polyps colon play:
- genetic factors;
- feeding habits (eating refined foods, excess animal food, lack of roughage);
What's going on?
Normally, cells of the intestinal mucosa are regularly updated. If this process is uneven, produces local growths of the intestinal mucosa — polyps.
As a rule, the tendency to disrupt the process shifts mucosal cells is inherited. In addition to genetic factors, proliferation of polyps and malignant transformation contributes to the use of a large number of animal and fatty foods and constipation. Animal fats and proteins lead to the formation of carcinogenic substances in the intestine, breaking update mucosal cells. Constipation contribute to long action of these substances.
If polyp small — a few millimeters in diameter, it does not bother the patient, and it can be found only by accident, when examining colon. Large polyps, up to several centimeters, can ulcerate, break through the wall of the intestine and cause bleeding.
With long-term existence of the polyp cells can become cancerous. On average, every fifth polyp transformed into cancer.