Colon polyps are growths on the inner lining of the colon (large intestine) and are very common. Colon polyps are important because they may be, or may become malignant (cancerous). They also are important because based on their size, number, and microscopic anatomy (histology) they can predict which patients are more likely to develop more polyps and colon cancer (colorectal cancer). These small clumps of tissue that show up where theyre not supposed to can be anything from a minor nuisance to a possible sign of cancer. an anal polyp is an abnormal growth that lines the anus or colon. Inflammatory anal polyps are common in people with chrohns disease. It is actually an enlarged mass of mucous membrane that resembles a polyp, but isnt in fact one. Close-up colonoscopic view of a bleeding auto-amputated sigmoid polyp in a six year old who presented with rectal bleeding and anemia. a rectal polyp is an abnormal growth that protrudes through the lining of the rectum at the base of the colon, or large intestine. Colorectal polyps are on of the most common conditions of the colorectal region. this video clip shows a colonoscopy performing a polypectomy of a small rectal stalked polyp. Early detection is powerful weapon against risk of colorectal cancer. In anatomy, a polyp is an abnormal growth of tissue projecting from a mucous membrane. If it is attached to the surface by a narrow elongated stalk, it is said to be pedunculated if it is attached without a stalk, it is said to be sessile. Polyps are commonly found in the colon, stomach, nose, ear, sinus(es), urinary bladder, and uterus.