In patients with no gastrointestinal problems and no risk factors for colon cancer, the American Cancer Society recommends a first screening colonoscopy at age 45.It is used to diagnose colon and rectum problems and to perform biopsies and remove colon polyps.
While the patient is under mild sedation or monitored anesthesia if deeper sedation is preferred, the physician inserts a flexible fiberoptic instrument called a colonoscope into the rectum and advances it through the colon (large bowel). Colonoscopy is a safe, effective method of examining the full lining of the colon and rectum.
