Discusses virtual colonoscopy (computed tomographic colonography). Explains how it differs from regular colonoscopy. Covers why it is done and when it might be chosen. Explains how it is done and what the results mean.

Describes colonoscopy, a screening test that examines the lining of the large intestine. Explains that the test is done to look for polyps in the colon or rectum and to check for colorectal cancer. Discusses preparing for the test and how it is done.

Before the test, you will need to stop eating solid foods. You also will follow instructions on how to clean out your colon. This will help your doctor to be able to see inside your colon during the test. When you make your appointment for the...

Guides you through choosing a test to check for colorectal cancer. Looks at symptoms of colorectal cancer. Covers stool tests, sigmoidoscopy, colonoscopy, and virtual colonoscopy. Includes interactive tool to help you make your decision.