Home > Gastroenterology > Colon Cancer Screening Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Feb 03, 2008 by BHoffman, Views: 6172 Dr. Brenda Hoffman, a gastroenterologist, discusses the importance of screening for colon cancer. Screening for people at high risk, such as those people with a family history, or history of polyps, screening may need to start screening at age 40. Colonoscopy is the most common screening test. MUSC-Medical Univ. of South Carolina Charleton, SC