Long-term effects of colonoscopy screening on colorectal cancer incidence and mortality: a multicountry, population-based randomised controlled trial

This study aimed to evaluate the long-term effects of colonoscopy screening on colorectal cancer incidence and mortality over a 13-year follow-up period. The results indicated that screening significantly reduced the incidence of colorectal cancer but did not show a corresponding reduction in mortality, with both groups experiencing lower-than-expected mortality rates. The findings suggest that while colonoscopy screening is effective in lowering cancer incidence, its impact on mortality may be less pronounced than anticipated.