Latest generation, wide-angle, high-definition colonoscopes increase adenoma detection rate.

Abstract

BACKGROUND & AIMS:

Improvements to endoscopy imaging technologies might improve detection rates of colorectal cancer and patient outcomes. We compared the accuracy of the latest generation of endoscopes with older generation models in detection of colorectal adenomas.

METHODS:

We compared data from 2 prospective screening colonoscopy studies (the Berlin Colonoscopy Project 6); each study lasted approximately 6 months and included the same 6 colonoscopists, who worked in private practice. Participants in group 1 (n = 1256) were all examined by using the latest generation of wide-angle, high-definition colonoscopes that were manufactured by the same company. Individuals in group 2 (n = 1400) were examined by endoscopists who used routine equipment (a mixture of endoscopes from different companies; none of those used to examine group 1). The adenoma detection rate was calculated on the basis of the number of all adenomas/number of all patients.

RESULTS:

There were no differences in patient parameters or withdrawal time between groups (8.0 vs 8.2 minutes). The adenoma detection rate was significantly higher in group 1 (0.33) than in group 2 (0.27; P = .01); a greater number of patients with least 1 adenoma were identified in group 1 (22.1%) than in group 2 (18.2%; P = .01). A higher percentage of high-grade dysplastic adenomas were detected in group 1 (1.19%) than in group 2 (0.57%), but this difference was not statistically significant (P = .06).

CONCLUSIONS:

The latest generation of wide-angle, high-definition colonoscopes improves rates of adenoma detection by 22%, compared with mixed, older technology endoscopes used in routine private practice. These findings might affect definitions of quality control parameters for colonoscopy screening for colorectal cancer.

• Authors: Andreas Adler, Alireza Aminalai, Jens Aschenbeck, Rolf Drossel, Michael Mayr, Mathias Scheel, Andreas Schröder, Timur Yenerim, Bertram Wiedenmann, Ulrich Gauger, Stephanie Roll, Thomas Rösch
• Journal: Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association (Clin Gastroenterol Hepatol) Vol. 10 Issue 2 Pg. 155-9 (Feb 2012) ISSN: 1542-7714 [Electronic] United States
• PMID: 22056301 (Publication Type: Comparative Study, Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2012 AGA Institute. Published by Elsevier Inc. All rights reserved.

Topics

• Adenoma (diagnosis)
• Aged
• Berlin
• Colonoscopes
• Colonoscopy (methods)
• Colorectal Neoplasms (diagnosis)
• Female
• Humans
• Male
• Middle Aged
• Prospective Studies
• Sensitivity and Specificity