Emerging imaging modalities impact diagnosis of digesti...(ators at nine medical institutions in th...),Health

Date:10/29/2009

ators at nine medical institutions in the United States looking at detection rates and withdrawal of the scope. The prospective study suggests that TER can lead to an enhancement of the detection rate of polyps and adenomas compared to standard colonoscopy. As endoscopists performed more procedures, their detection rates for both polyps and adenomas improved from earlier exams compared to later exams, and the withdrawal times for the later procedures were somewhat shorter than for the earlier procedures.

"Colonoscopy is the most accurate method for evaluating the colon, but some lesions can be missed, especially if they are on the proximal aspect of folds or flexures in the colon," explains Dr. DeMarco. "This study evaluates the learning curve for use of the TER, both in terms of efficacy of detection of lesions and time-efficiency."

Does High Definition Improve Detection of Adenomas?

High definition (HD) colonoscopy has the potential to identify more polyps in the colon, but several different teams of researchers explored whether HD is better than standard "white light" colonoscopy at finding adenomas -- benign growths in the colon that have the potential to become cancerous. High definition (HD) colonoscopes may allow detection of subtle changes in the colonic mucosa, potentially aiding detection of adenomas and hyperplastic polyps.

Findings from a retrospective study of 720 patients at New York Presbyterian Hospital Weill-Cornell Medical Center, in a presentation entitled "Finding More Polyps, but are they Significant?" revealed that while HD colonoscopy improves the overall detection of polyps compared to standard colonoscopy, there is no statistically significant difference in the total number of adenomas between the two types of exams.

The absolute polyp detection rate for high definition colonoscopy was 36.4 percent compared to 29.4 percent for standard white light colonoscopy. But when comparing the ability to
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Contact: Jennifer Burke Labriola burkepr@gmail.com 203-405-1479 American College of Gastroenterology Source:Eurekalert

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