A polyp is an abnormal growth of tissue rising from the lining of the large intestine and protruding into the intestinal canal. Some polyps are flat, and others are attached to a stalk.
It is one of the most common conditions affecting the colon and rectum, and it occurs in 15-20% of the adult population. While some polyps are non-cancerous, the natural progression of certain polyps to cancer is well established. Some polyps,if left alone, may gradually progress to colorectal cancer.