Retrospective Cohort Study
Copyright ©The Author(s) 2018. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Endosc. Jan 16, 2018; 10(1): 16-22
Published online Jan 16, 2018. doi: 10.4253/wjge.v10.i1.16
New 14-mm diameter Niti-S biliary uncovered metal stent for unresectable distal biliary malignant obstruction
Masataka Kikuyama, Naofumi Shirane, Shinya Kawaguchi, Shuzou Terada, Tsuyoshi Mukai, Ken Sugimoto
Masataka Kikuyama, Naofumi Shirane, Shinya Kawaguchi, Shuzou Terada, Tsuyoshi Mukai, Ken Sugimoto, Department of Gastroenterology, Komagome Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo 113-8677, Japan
Naofumi Shirane, Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 432-8021, Japan
Tsuyoshi Mukai, Department of Gastroenterology, Gifu Municipal Hospital, Gifu 500-8513, Japan
Ken Sugimoto, Department of Gastroenterology, Hamamatsu University School of Medicine, Shizuoka 113-8677, Japan
Author contributions: All authors have contributed to and agreed on the content of the manuscript; Kikuyama M, Shirane N and Kawaguchi S contributed to data collection; Terada S contributed to statistical analysis; Mukai T and Sugimoto K contributed to data collection.
Institutional review board statement: This study was approved by the institutional review aboards of Shizuoka General Hospital, Gifu Municipal Hospital, and Hamamatsu University Hospital.
Informed consent statement: All the treatment procedures were performed after obtaining the informed consent in writing from the patients.
Conflict-of-interest statement: Authors declare no conflicts of interest for this article.
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: Masataka Kikuyama, MD, PhD, Department of Gastroenterology, Komagome Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-15-22, Honkomagome, Bunnkyo-ku, Tokyo 113-8677, Japan. kikuyama110@cick.jp
Telephone: +81-3-38232101 Fax: +81-3-38235433
Received: June 30, 2017
Peer-review started: July 6, 2017
First decision: August 7, 2017
Revised: August 30, 2017
Accepted: November 3, 2017
Article in press: November 3, 2017
Published online: January 16, 2018
Processing time: 194 Days and 19.1 Hours
ARTICLE HIGHLIGHTS
Background

Recurrent biliary obstruction (RBO) due to tumor ingrowth or migration remains to be resolved in endoscopic transpapillary biliary stent placement for malignant biliary obstruction (MBO).

Research frontiers

It was expected that an uncovered self-expandable metal stent with a large diameter could prevent RBO.

Innovations and breakthroughs

Niti-S 14 is a large bore and uncovered metal stent, but is safe for treatment for MBO and considered to be a preferable SEMS because of a low rate of RBO with no migration.