Retrospective Cohort Study
Copyright ©The Author(s) 2016. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Oct 14, 2016; 22(38): 8549-8557
Published online Oct 14, 2016. doi: 10.3748/wjg.v22.i38.8549
Interendoscopist variability in proximal colon polyp detection is twice higher for serrated polyps than adenomas
Jean-François Bretagne, Stéphanie Hamonic, Christine Piette, Jean-François Viel, Guillaume Bouguen
Jean-François Bretagne, Guillaume Bouguen, Service des maladies de l’appareil digestif, hôpital Pontchaillou, Centre hospitalo-universitaire de Rennes, 35033 Rennes, France
Stéphanie Hamonic, Jean-François Viel, Service d’épidémiologie et de santé publique, Centre hospitalo-universitaire de Rennes, 35033 Rennes, France
Christine Piette, Association pour le dépistage des cancers en Ille et Vilaine, 35033 Rennes, France
Author contributions: Bretagne JF designed the study and wrote the paper; Hamonic S and Viel JF performed the statistical analyses; Piette C collected the database information; Bouguen G contributed to the writing and the data interpretation; all of the authors contributed to the data analysis and approved the final submitted draft.
Institutional review board statement: The study was reviewed and approved for publication by our Institutional Reviewer.
Informed consent statement: Participants to the screening program were informed that personal data and colonoscopy findings could be used anonymously for scientific studies.
Conflict-of-interest statement: The authors have no potential conflict of interest.
Data sharing statement: The original anonymous dataset is available on request from the corresponding author at jean-francois.bretagne@chu-rennes.fr.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Dr. Jean-François Bretagne, Professor of Medicine, Service des maladies de l’appareil digestif, hôpital Pontchaillou, Centre hospitalo-universitaire de Rennes, 35033 Rennes, France. jean-francois.bretagne@chu-rennes.fr
Telephone: +33-299-284347 Fax: +33-299-284189
Received: June 30, 2016
Peer-review started: June 30, 2016
First decision: July 29, 2016
Revised: August 19, 2016
Accepted: September 12, 2016
Article in press: September 12, 2016
Published online: October 14, 2016
Processing time: 104 Days and 13.6 Hours
Core Tip

Core tip: The present study demonstrates high interendoscopist variability in adenoma, proximal adenoma, and proximal serrated polyp detection rates but not in distal adenoma detection rates. The magnitude of interendoscopist variation was wider for proximal serrated polyps as compared to proximal adenoma detection. Altogether, these findings might explain why complete colonoscopies are less effective at preventing proximal than distal colorectal cancers.