Family Medicine

Answer 3 Colonoscopy every 10 years. Acceptable screening methods for colorectal cancer include the following: fecal occult blood testing annually, flexible sigmoidoscopy every 5 years, fecal occult blood testing annually with flexible sigmoidoscopy every 5 years, double-contrast barium enema every 5 years, double-contrast barium enema with flexible sigmoidoscopy every 5 years, or colonoscopy every 10 years. Virtual colonoscopy is another emerging technology for colorectal cancer screening; however, further study and larger sample populations of patients at average risk for colorectal cancer are necessary before this method can be widely used.1 REFERENCE 1. Pignone M, Levin B. Recent developments in colorectal cancer screening and prevention. Am Fam Physician 2002;66:297-302. Click here to return to the questions

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