Case Report
Copyright ©The Author(s) 2016. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Aug 14, 2016; 22(30): 6960-6964
Published online Aug 14, 2016. doi: 10.3748/wjg.v22.i30.6960
Neuroendocrine carcinoma of the extrahepatic bile duct: A case report
Yukio Oshiro, Ryozo Gen, Shinji Hashimoto, Tatsuya Oda, Taiki Sato, Nobuhiro Ohkohchi
Yukio Oshiro, Ryozo Gen, Shinji Hashimoto, Tatsuya Oda, Nobuhiro Ohkohchi, Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
Taiki Sato, Department of Pathology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
Author contributions: All authors contributed substantially to the acquisition, analysis, and interpretation of the data and participated in writing the paper; Ohkohchi N gave final approval of the version to be published.
Supported by Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Japan.
Institutional review board statement: The University of Tsukuba Hospital Institutional Review Board does not require approval for case reports.
Informed consent statement: The patient involved in this case report authorized the disclosure of his protected health information for academic purposes.
Conflict-of-interest statement: All authors indicate that they have no financial interests or potential conflicts of interest to declare.
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: Yukio Oshiro, MD, PhD, Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan. oshiro@md.tsukuba.ac.jp
Telephone: +81-29-8533221 Fax: +81-29-8533222
Received: March 28, 2016
Peer-review started: March 31, 2016
First decision: May 12, 2016
Revised: May 24, 2016
Accepted: June 13, 2016
Article in press: June 13, 2016
Published online: August 14, 2016
Processing time: 129 Days and 7.5 Hours
Core Tip

Core tip: We encountered a resected case of a neuroendocrine carcinoma originating from the extrahepatic bile duct. Although neuroendocrine carcinoma is rare and difficult to diagnose preoperatively, it should be considered an uncommon alternative diagnosis.