Loading...
In 1993, the National Polyp Study, a large, randomized, controlled trial — initially designed to test 1-year versus 3-year colonoscopic postpolypectomy surveillance intervals in patients who had adenomas removed — reported that the cohort had 76% to 90% lower incidence of colorectal cancer than reference populations. Now, long-term follow-up data on mortality from colorectal cancer are reported for this cohort.
The current study included 2602 patients with adenomas (adenoma cohort) and 773 patients with nonadenomatous polyps (nonadenoma cohort) who had undergone colonoscopic polypectomy at seven clinical centers between 1980 and 1990 for diagnostic purposes. Deaths in the cohort were identified from the National Death Index. U.S. national ca…