Sigmoidoscopy Reduces CRC Incidence Rates in Men in Norwegian Screening Study - Summary - MDSpire
Clinical Guidelines

Sigmoidoscopy Reduces CRC Incidence Rates in Men in Norwegian Screening Study

Offering sigmoidoscopy screening led to reduced incidence of colorectal cancer, though more for men vs women, and a reduced rate of colorectal cancer–related mortality in men, according to findings fr...

  • By

  • The ASCO Post Staff

  • May 15, 2026

  • 3 min

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The NORCCAP trial, conducted in Norway, demonstrated that sigmoidoscopy screening significantly reduces the incidence of colorectal cancer and related mortality, particularly in men. Over 23 years, 100,000 individuals aged 50 to 64 were randomized into screening and no-screening groups. Men showed a 1.7 percentage point decrease in colorectal cancer risk and 0.8 percentage points reduction in related mortality, while the effects for women were less pronounced. These results suggest fewer screenings may be necessary in typical age ranges.

Original Source(s)

Sigmoidoscopy Reduces CRC Incidence Rates in Men in Norwegian Screening Study

  • by The ASCO Post Staff

  • May 15, 2026

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