The large intestine is a five- to six-foot-long muscular tube that begins and ends with a relatively wide chamber outside the mainstream of fecal flow. These chambers are the cecum and the rectum. The cecum is that part of the colon proximal to the ileocecal valve that may be bypassed by the small bowel contents as they enter the colon. Its function as a sump is evident from the colonic “gravel” that collects there and is seen during colonoscopy. The rectum is the organ of defecation, usually empty of stool and resting until a mass movement delivers a load. There are therefore structural and functional commonalities between the cecum and rectum: both are large chambers without regular throughput of stool and without constant peristalsis, and both are at the extremity of the large bowel. These commonalities are intriguing. Both organs develop large sessile polyps that may be difficult to treat. If you postulate that pedunculated polyps develop due to the pull of peristalsis, it is not surprising that cecal and rectal polyps tend to be flat or sessile.