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Black Americans have higher rates of colorectal cancer (CRC) incidence and mortality than do white Americans, and they also tend to develop CRC at a younger age. For these reasons, the American College of Gastroenterology recommends that CRC screening be initiated in blacks at age 45 rather than at age 50 (Am J Gastroenterol 2005; 100:515). However, this recommendation has proven controversial, in part because of inconclusive data on whether or not blacks are more likely than whites to have advanced adenomas detected during routine CRC screening.
In the present study, researchers investigated racial differences in the prevalence of large colon polyps (>9 mm) among 85,525 asymptomatic patients (94% white; 6% black) who underwent screening col…