National Polyp Study

National Polyp Study

GI disease A 10-year study that found that colonoscopy was more effective than barium enema in detecting precancerous adenomas, reported in June 2000, NEJM.
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The National Polyp Study. Patient and polyp characteristics associated with high-grade dysplasia in colorectal adenomas.
The National Polyp Study used endoscopic estimation of polyp size with open biopsy forceps [3].
Prior to the development of postpolypectomy surveillance guidelines, which were based on the National Polyp Study in 1997, annual surveillance was a common practice.
In contrast, data from the influential National Polyp Study assessed screening colonoscopy in high-risk patients who first underwent polypectomy (N.
PHILADELPHIA -- The first colonoscopy done on a person has the greatest impact for preventing death from colorectal cancer, and subsequent surveillance colonoscopies play a lesser role, based on a new analysis of 20-year follow-up data collected in the National Polyp Study.
Zauber performed a microsimulation screening analysis on data collected in the National Polyp Study. The study began by screening more than 9,000 people.
For the past ten years, the Sloan-Kettering Cancer Center in New York has conducted the National Polyp Study with six other hospitals.
The investigators performed long-term follow-up of subjects who had participated in the National Polyp Study, a randomized clinical trial of patients prospectively referred to seven clinical centers for colonoscopy during 19801990.
The investigators also compared colorectal cancer mortality in the study cohort against that in a group of 773 National Polyp Study participants who had been found to have nonadenomatous polyps on their initial colonoscopy.
Preliminary data from the National Polyp Study were reported by Winawer et al[35] during the Digestive Disease Week in May of 1991 in New Orleans.
The National Polyp Study is a prospective study sponsored by the National Cancer Institute.
She reported on 1,699 patients who underwent 3-year surveillance colonoscopy as part of the National Polyp Study. Major procedural complications--bleeding and/or perforation requiring hospitalization--occurred at a rate of 1.8 cases per 1,000 surveillance colonoscopies.

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