Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Jan 28, 2021; 27(4): 371-376
Published online Jan 28, 2021. doi: 10.3748/wjg.v27.i4.371
Duplication of the common bile duct manifesting as recurrent pyogenic cholangitis: A case report
Jun Seong Hwang, Sung Woo Ko
Jun Seong Hwang, Internal Medicine, Inje University Haeundae Paik Hospital, Inje College of Medicine, Busan 48108, South Korea
Sung Woo Ko, Internal Medicine, Eunpyeong St. Mary's Hospital, Catholic University of Korea, Seoul 03312, South Korea
Author contributions: Hwang JS was the patient’s gastroenterologist, and contributed to manuscript drafting; Ko SW was responsible for the revision of the manuscript by providing important intellectual content.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declare that they have no conflict of interest.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (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:
Corresponding author: Sung Woo Ko, MD, Assistant Professor, Internal medicine, Eunpyeong St. Mary's Hospital, Catholic University of Korea, 1021, Tongil-ro, Eunpyeong-gu, Seoul 03312, South Korea.
Received: November 23, 2020
Peer-review started: November 23, 2020
First decision: December 8, 2020
Revised: December 16, 2020
Accepted: January 8, 2021
Article in press: January 8, 2021
Published online: January 28, 2021
Core Tip

Core Tip: Double common bile duct (DCBD) is an extremely rare congenital biliary tract anomaly. We present herein, a rare case of DCBD manifesting as a recurrent pyogenic cholangitis. It is substantial to establish complete stone clearance during endoscopic retrograde cholangiopancreatography because residual stone is a probable risk factor for recurrent cholangitis. However, DCBD, an extremely rare anomaly, can completely mask the presence of remnant bile duct stones for biliary endoscopists. In this case, recurrent cholangitis, which occurred immediately after bile duct stone clearance was a clue to recognize DCBD. Although this is a rare condition, our case highlights the importance of recognizing DCBD because stones in the unrecognized bile duct could make the patient’s prognosis critical.