The study looked at roughly 25,000 patients in the Veterans Affairs (VA) health system, where colonoscopy is widely used. The VA views it as the main screening test for patients aged 50 and older who have average odds for developing colon or rectal cancer.

The study looked at roughly 25,000 patients in the Veterans Affairs (VA) health system, where colonoscopy is widely used. The VA views it as the main screening test for patients aged 50 and older who have average odds for developing colon or rectal cancer.

https://www.webmd.com/colorectal-cancer/news/20180314/study-confirms-lifesaving-value-of-colonoscopy