Screening with PSA and DRE can detect prostate cancer in its early stages, but it is not clear whether early detection improves health outcomes. Screening may result in several potential harms, including frequent false-positive results, biopsies, and anxiety. Treatment side effects may include erectile dysfunction, urinary incontinence, and bowel dysfunction. Treatment of all cases detected by screening is likely to result in many interventions for men who would never have experienced symptoms from their cancers (Harris et al., 2001).
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