Retrospective Cohort Study
Copyright ©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jan 6, 2019; 7(1): 10-18
Published online Jan 6, 2019. doi: 10.12998/wjcc.v7.i1.10
Risk factors for perforation during endoscopic retrograde cholangiopancreatography in post-reconstruction intestinal tract
Shinichi Takano, Mitsuharu Fukasawa, Hiroko Shindo, Ei Takahashi, Sumio Hirose, Yoshimitsu Fukasawa, Satoshi Kawakami, Hiroshi Hayakawa, Hiroshi Yokomichi, Makoto Kadokura, Tadashi Sato, Nobuyuki Enomoto
Shinichi Takano, Mitsuharu Fukasawa, Hiroko Shindo, Ei Takahashi, Sumio Hirose, Yoshimitsu Fukasawa, Satoshi Kawakami, Hiroshi Hayakawa, Makoto Kadokura, Tadashi Sato, Nobuyuki Enomoto, First Department of Internal Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi 409-3898, Japan
Hiroshi Yokomichi, Department of Health Sciences, Interdisciplinary Graduate School and Engineering, University of Yamanashi, Yamanashi 409-3898, Japan
Author contributions: Takano S designed and conducted the research and wrote the paper; Fukasawa M designed the research and supervised the report; Shindo H, Takahashi E, Hirose S, Fukasawa Y, Kawakami S, Hayakawa H, and Kadokura M provided clinical advice; Hiroshi Yokomichi checked statistical methods; Sato T and Enomoto N supervised the report.
Institutional review board statement: This retrospective study was approved by the ethics committee of Yamanashi University Hospital.
Informed consent statement: The requirement for written informed consent was waived by the ethics committee of our institution because the study was a retrospective data analysis. Appropriate consideration was given to patient risk, privacy, welfare, and rights.
Conflict-of-interest statement: All authors report no financial conflicts of interest related to this article.
Data sharing statement: No additional data are available.
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/
Corresponding author: Mitsuharu Fukasawa, MD, PhD, Lecturer, First Department of Internal Medicine, Faculty of Medicine, University of Yamanashi, 1110, Shimokato, Chuo, Yamanashi 409-3898, Japan. fmitsu@yamanashi.ac.jp
Telephone: +81-55-273-9584 Fax: +81-55-273-6748
Received: October 27, 2018
Peer-review started: October 29, 2018
First decision: November 22, 2018
Revised: December 16, 2018
Accepted: December 21, 2018
Article in press: December 21, 2018
Published online: January 6, 2019
Core Tip

Core tip: Endoscopic retrograde cholangiopancreatography (ERCP) for patients with surgically altered anatomy accompanies a high risk of perforation. This study identified that Billroth-II reconstruction was associated with high risk of perforation during ERCP procedure. Moreover, a looping shape of a scope during insertion in patients with Billroth-II reconstruction proved to be a more specific risk factor of perforation in ERCP.