Flexible Sigmoidoscopy is a way to look at the colon (large bowel) using a flexible, lighted tube ro see the inside of the bowel for any abnormal growths or information of the colon wall. It is an effective tool to prevent and detect early colon cancer. Colon cancer is the second most common cause of cancer death in the United States. Many lives can be saved if precancerous growths (polyps) are discovered before they become cancerous, or if colon cancer is discovered before it has spread. Sigmoidoscopy also can diagnose inflammation of the colon (ulcerative colitis or Crohn's disease) and diverticulosis. A number of our physicians perform this procedure in our clinics.