K63: Other diseases of intestine

K63.5: Polyp of colon

The intestines are made up of the small intestine and the large intestine or colon. Most of the nutrients are absorbed in the small intestine. The large intestine (colon) is where water and salt are withdrawn from the stool. The last segment of the large intestine (colon) is the rectum. Stool then leaves the body through the anus.

The intestines are lined with mucous membrane. The mucous membrane is made up of many individual building blocks. These building blocks are called cells. The cells can multiply for instance because of an inflammation. If the cells multiply, the mucous membrane may protrude into the interior of the intestines.

If the mucous membrane in the large intestine is protruding, you may often have no symptoms. But you may also have bleeding from your anus or blood in your feces. You may also have constipation.