Colorectal cancer screening

Abstract

Comprehensive evidence-based guidelines for screening and surveillance for colorectal cancer were published in 1997. Backed by compelling scientific data from recently completed controlled trials and case-control studies, these guidelines recommend annual fecal occult blood test screening plus periodic flexible sigmoidoscopy about every 5 years for asymptomatic, average-risk individuals over 50 years of age. Other screening studies published during the past year refine knowledge about how these screening tests detect early cancer and polyps and assess factors that influence compliance with screening recommendations. Preliminary reports suggest revolutionary new methods of screening that may become clinically feasible in the next millennium.