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A colonoscopy (koe-lun-OS-kuh-pee) is an exam used to look for changes — such as swollen, irritated tissues, polyps or cancer — in the large intestine (colon) and rectum. During a colonoscopy, a long, flexible tube (colonoscope) is inserted into the rectum.
Colonoscopy is one of the most sensitive tests currently available for colon cancer screening. The doctor can view your entire colon and rectum. Abnormal tissue, such as polyps, and tissue samples (biopsies) can be removed through the scope during the exam.
Colonoscopy, in which a small tube with a light and camera is inserted into your rectum to look at your colon. If polyps are found, your health care provider may remove them immediately or take tissue samples to send to the lab for analysis.
The purpose of a colonoscopy is to examine the colon and rectum for abnormalities such as polyps, tumors or inflammation, aiding in the detection and prevention of colorectal cancer. And to do that, it's important your medical team has a clear view.
Colonoscopy uses a long, flexible and slender tube attached to a video camera and monitor to view the whole colon and rectum. A doctor may pass surgical tools through the tube to take tissue samples and remove polyps.
Virtual colonoscopy is also known as screening CT colonography. Unlike the usual or traditional colonoscopy, which needs a scope to be put into your rectum and advanced through your colon, virtual colonoscopy uses a CT scan to take hundreds of cross-sectional pictures of your belly organs.
Find out why colposcopy is done and what to expect during an exam to diagnose cancer and other problems affecting the cervix, vagina and vulva.
Colonoscopy is one option for colon cancer screening. Find out what to expect during this procedure to examine the inside of your colon.
Answer From Michael F. Picco, M.D. There's no upper age limit for colon cancer screening. But most medical organizations in the United States agree that the benefits of screening decline after age 75 for most people and there's little evidence to support continuing screening after age 85.
Overview. A colon polyp is a small clump of cells that forms on the lining of the colon. Most colon polyps are harmless. But over time, some colon polyps can develop into colon cancer. Colon cancer can be fatal when found in its later stages. Anyone can develop colon polyps.