Polyps of the Colon and Rectum By Minhhuyen Nguyen, MD, Fox Chase Cancer Center, Temple University Reviewed / Revised Mar 2021 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Prevention Key Points More Information Topic Resources Sessile Polyp Pedunculated Polyp Tubulovillous Adenoma An intestinal polyp is any mass of tissue that arises from the bowel wall and protrudes into the lumen.