|A Comparison of Colonoscopy and Double-Contrast Barium Enema for Surveillance after Polypectomy|
|Sidney J. Winawer, Edward T. Stewart, Ann G. Zauber, et al.|
|Abramson Cancer Center of the University of Pennsylvania|
| Last Modified: November 1, 2001
Reviewers: Li Liu, M.D
Précis: Colonoscopy is superior to barium enema for postpolypectomy surveillance.
IntroductionIt is widely held that adenomatous polyps are precursors of colorectal cancer and that their removal is important because of the potential for reducing the incidence and mortality of colorectal cancer. Periodic surveillance examinations after polypectomy have been considered necessary because of the high frequency of adenomatous polyps detected at follow-up. This study compared efficacy of colonoscopy and double-contrast barium enema for surveillance after polypectomy.
MethodA total of 582 patients with newly diagnosed adenomatous polyps underwent a total of 862 paired colonoscopies and double-contrast barium enemas for surveillance.
DiscussionIn this study, colonoscopy is superior to double-contrast barium enema for surveillance in patients who have undergone polypectomy. The ability of barium enema to detect clinically important polyps appears not good enough for the surveillance of patients who are at increased risk for polyps or for a diagnostic evaluation of the colon.