Brought to you by the American Gastroenterological Association

CT colonography

CT colonography

A computerized tomographic (CT) colonography, or virtual colonoscopy, is a procedure to check for health issues in the digestive tract, including colorectal cancer, using a CT scanner.

Colorectal cancer (CRC)

Healthy colon progression to colorectal cancer (CRC)

Colorectal cancer is the third most common cancer among men and among women in the U.S. It occurs when precancerous polyps in the colon or in the rectum become cancerous. Signs may include rectal bleeding, blood in the stool or change in bowel movements.