Case Report
Copyright ©The Author(s) 2017. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Oct 21, 2017; 23(39): 7185-7190
Published online Oct 21, 2017. doi: 10.3748/wjg.v23.i39.7185
Oval mucosal opening bloc biopsy after incision and widening by ring thread traction for submucosal tumor
Hirohito Mori, Hideki Kobara, Yu Guan, Yasuhiro Goda, Nobuya Kobayashi, Noriko Nishiyama, Tsutomu Masaki
Hirohito Mori, Hideki Kobara, Yasuhiro Goda, Nobuya Kobayashi, Noriko Nishiyama, Tsutomu Masaki, Department of Gastroenterology and Neurology, Kagawa University, Kita, Kagawa 761-0793, Japan
Yu Guan, Departments of Pharmacology, Kagawa University, Kita, Kagawa 761-0793, Japan
Author contributions: Mori H was responsible for devising the research and writing the manuscript; Kobara H, Guan Y, Goda Y, Kobayashi N and Nishiyama N participated equally in the work; Masaki T provided a critical revision of the manuscript for intellectual content and was responsible for final approval of the manuscript.
Institutional review board statement: This study was approved by the ethics committees of Kagawa University Hospital (approval No. 51), and it is in accordance with the Declaration of Helsinki.
Informed consent statement: Patients were provided verbal and written informed consent.
Conflict-of-interest statement: All authors declare that they have no conflicts of interest, and no corporate financing was received.
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: Hirohito Mori, MD, PhD, Doctor, Lecturer, Department of Gastroenterology and Neurology, Kagawa University, 1750-1 Ikenobe, Miki, Kita, Kagawa 761-0793, Japan. hiro4884@med.kagawa-u.ac.jp
Telephone: +81-87-8912156 Fax: +81-87-8912158
Received: June 28, 2017
Peer-review started: June 28, 2017
First decision: July 25, 2017
Revised: August 15, 2017
Accepted: September 5, 2017
Article in press: September 5, 2017
Published online: October 21, 2017
Processing time: 115 Days and 23.5 Hours
Core Tip

Core tip: Gastric submucosal tumors (SMTs) less than 2 cm are generally considered benign neoplasms, and endoscopic observation is recommended, but SMTs over 2 cm, 40% of which are gastrointestinal stromal tumors (GISTs), have malignant potential. Although partial surgical resection for GIST over 2 cm with malignant potential as well as en bloc large tissue sample to obtain appropriate and large specimen of SMTs is recommended, several reports have been published on tissue sampling of SMTs. Because a simpler, more accurate method is needed for appropriate treatment, we developed oval mucosal opening bloc biopsy after incision and widening by ring thread traction approach.