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The American Cancer Society (ACS) recommends screening for colorectal cancer (CRC) in average-risk individuals starting at age 45 years. However, there is a paucity of population-based data regarding the prevalence of precursor colorectal polyps in average-risk individuals younger than 50. To fill this data gap, investigators identified nearly 41,000 colonoscopy recipients in the New Hampshire Colonoscopy Registry; colonoscopy indication was screening in those aged ≥50 years and “screening equivalent” in the 14% who were younger than 50. “Screening equivalent” referred to low-risk diagnostic indications (abdominal pain, constipation) or screening. The results were as follows:
The prevalence of advanced neoplasia (AN; adenoma ≥1 cm, villous e…