©The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Jan 14, 2015; 21(2): 593-599
Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.593
Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.593
Short turn radius colonoscope in an anatomical model: Retroflexed withdrawal and detection of hidden polyps
Sarah K McGill, Shivangi Kothari, Shai Friedland, Ann Chen, Walter G Park, Subhas Banerjee, Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, United States
Author contributions: McGill SK, Kothari S, Friedland S and Banerjee S conceived and designed this study, drafted the article, performed analysis and approved the final version; Chen A and Park WG contributed to analysis, drafting of article and approved the final version.
Correspondence to: Subhas Banerjee, MBBS, MRCP, Director of Endoscopy, Division of Gastroenterology and Hepatology, Stanford University School of Medicine, 300 Pasteur Drive, H0262A, MC 5244, Stanford, CA 94305, United States. sbanerje@stanford.edu
Telephone: +1-650-7232623 Fax: +1-650-7250705
Received: April 24, 2014
Peer-review started: April 24, 2014
First decision: August 6, 2014
Revised: August 21, 2014
Accepted: September 29, 2014
Article in press: September 29, 2014
Published online: January 14, 2015
Processing time: 269 Days and 12.8 Hours
Peer-review started: April 24, 2014
First decision: August 6, 2014
Revised: August 21, 2014
Accepted: September 29, 2014
Article in press: September 29, 2014
Published online: January 14, 2015
Processing time: 269 Days and 12.8 Hours
Core Tip
Core tip: Polyps located on the proximal side of colon folds can be challenging to detect. The new RetroView™ colonoscope has a short turning radius that allows a retroflexed view of the colon during withdrawal. In this bench colon model study, the RetroView™ colonoscope detected more proximally-located, “hidden” polyps during retroflexed withdrawal, than a conventional colonoscope withdrawn in standard fashion. The highest polyp detection rate was achieved when the RetroView™ colonoscope was withdrawn in retroflexion followed by standard withdrawal. This combination of standard and retroflexed withdrawal holds promise for optimizing polyp detection in patients undergoing screening colonoscopy.