Flexible Sigmoidoscopy checks for polyps in the lower bowel, including your rectum, sigmoid colon, and your descending colon. This test must be performed every 10 years. A thin, flexible, lighted tube (sigmoidoscope) with a tiny camera at its tip is inserted into your rectum and then travels about 2 feet through your colon. If polyps are found, a colonoscopy is required.
- Screens lower colon
- Suspicious polyps are immediately removed
- Rarely requires sedation
- In some areas, medical professionals besides doctors (such as Registered Nurses) can administer the test
- Test preparation requires enema
- Misses polyps in higher colon