A one-time sigmoidoscopy screening reduced colorectal cancer incidence and mortality in men, though little or no effect was observed in women, according to a Norwegian study published today in Annals of Internal Medicine.

“Sigmoidoscopy is highly effective in men, and the effect is long lasting. For women, other options should be discussed,” Øyvind Holme, MD, PhD, associate professor at the University of Oslo, Norway, told Healio Internal Medicine.