Safety and efficacy of metallic stent for unresectable distal malignant biliary obstruction in elderly patients
Yuji Sakai, Harutoshi Sugiyama, Toshio Tsuyuguchi, Department of Gastroenterology and Nephrology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
Tomohisa Iwai, Seigo Nakatani, Mitsuhiro Kida, Department of Gastroenterology, Kitasato University School of Medicine, Kanagawa 252-0375, Japan
Kenji Shimura, Department of Gastroenterology, Asahi Central Hospital, Chiba 289-2511, Japan
Katsushige Gon, Iruru Maetani, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo 153-8515, Japan
Kazuya Koizumi, Gastroenterology Medicine Center, Shonan Kamakura General Hospital, Kanagawa 247-8533, Japan
Masashi Ijima, Department of Gastroenterology, Subaru Health Insurance Society Ota Memorial Hospital, Gunma 373-8585, Japan
Kazuro Chiba, Terumi Kamisawa, Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo 113-8677, Japan
Author contributions: Sakai Y, Sugiyama H and Tsuyuguchi T were responsible for the study design, data analysis, and manuscript preparation; Sakai Y wrote the paper; Sakai Y, Shimura K, Koizumi K, Ijima M, Chiba K, Tsuyuguchi T, Kamisawa T, Maetani I and Kida M performed endoscopic treatment; Iwai T, Gon K, Nakatani S and Sugiyama H were responsible for data collection.
Institutional review board statement: This study was conducted under approval our ethical committee.
Informed consent statement: All the treatment procedures were performed after obtaining the informed consent in writing from the patients.
Conflict-of-interest statement: The authors have no other disclosures.
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/
Correspondence to: Yuji Sakai, MD, PhD, Department of Gastroenterology and Nephrology, Graduate School of Medicine, Chiba University, Inohana 1-8-1, Chuou-ku, Chiba 260-8670, Japan. email@example.com
Telephone: +81-43-2262083 Fax: +81-43-2262088
Received: October 29, 2017
Peer-review started: October 30, 2017
First decision: November 21, 2017
Revised: December 2, 2017
Accepted: December 12, 2017
Article in press: December 12, 2017
Published online: January 7, 2018