Case Report
Copyright ©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Feb 14, 2024; 30(6): 599-606
Published online Feb 14, 2024. doi: 10.3748/wjg.v30.i6.599
Y–Z deformable magnetic ring for the treatment of rectal stricture: A case report and review of literature
Miao-Miao Zhang, Huan-Chen Sha, Yuan-Fa Qin, Yi Lyu, Xiao-Peng Yan
Miao-Miao Zhang, Huan-Chen Sha, Yuan-Fa Qin, Yi Lyu, Xiao-Peng Yan, Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China
Miao-Miao Zhang, Yi Lyu, Xiao-Peng Yan, National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China
Co-corresponding authors: Xiao-Peng Yan and Yi Lyu.
Author contributions: Lyu Y and Yan XP designed and coordinated the study; Yan XP and Zhang MM designed the deformable magnetic ring, Zhang MM, Sha HC, Qin YF, Yan XP performed the operation; Zhang MM, and Yan XP wrote the manuscript; Yan XP and Lyu Y conceived of the study and contributed to the study design, the interpretation of the results, and the critical revision of the manuscript; all authors read and approved the final manuscript. The reasons for designating Yan XP and Lyu Y as co-corresponding authors are as follows: Yan XP and Lyu Y have equal contributions in study design and making critical revisions to the manuscript. The two co-corresponding authors ensures effective communication and management of post-submission matters, ultimately enhancing the paper’s quality and reliability. Yan XP and Lyu Y contributed efforts of equal substance throughout the research process. Therefore, Yan XP and Lyu Y are designated as co-corresponding authors in this manuscript.
Supported by Institutional Foundation of The First Affiliated Hospital of Xi’an Jiaotong University, No. 2022MS-07; and The Fundamental Research Funds for the Central Universities, No. xzy022023068.
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: Xiao-Peng Yan, MD, PhD, Associate Research Scientist, Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, No. 277 West Yanta Road, Xi’an 710061, Shaanxi Province, China.
Received: December 11, 2023
Peer-review started: December 11, 2023
First decision: December 15, 2023
Revised: December 18, 2023
Accepted: January 16, 2024
Article in press: January 16, 2024
Published online: February 14, 2024

Treatment of postoperative anastomotic stenosis for colorectal cancer is often challenging, especially for patients who do not respond well to endoscopy. In cases where patients have undergone an enterostomy, the stenosis can be easily resolved through magnetic compression. However, common magnetic compression techniques cannot be performed on those without enterostomy. We designed a novel Y–Z deformable magnetic ring (Y–Z DMR) and successfully applied it to a patient with a stenosis rectal anastomosis and without enterostomy after rectal cancer surgery.


We here report the case of a 57-year-old woman who had undergone a laparoscopic radical rectum resection (Dixon) for rectal cancer. However, she started facing difficulty in defecation 6 months after surgery. Her colonoscopy indicated stenosis of the rectal anastomosis. Endoscopic balloon dilation was performed six times on her. However, the stenosis still showed a trend of gradual aggravation. Because the patient did not undergo an enterostomy, the conventional endoscopic magnetic compression technique could not be performed. Hence, we implemented a Y–Z DMR implemented through the anus under single channel. The magnetic ring fell off nine days after the operation and the rectal stenosis was relieved. The patient was followed up for six months and reported good defecation.


The Y–Z DMR deformable magnetic ring is an excellent treatment strategy for patients with rectal stenosis and without enterostomy.

Keywords: Anastomotic stenosis, Colorectal cancer, Magnetosurgery, Magnetic compression technique, Magnetic surgery clinic, Case report

Core Tip: The magnetic compression technique can be used to treat patients with rectal stenosis that have also undergone an enterostomy. However, the existing magnetic ring cannot be used in patients without enterostomy. We designed a Y–Z deformable magnetic ring (Y–Z DMR), which can realize the single channel of the magnet placed through the anus. This paper reports the first successful clinical case of using the Y–Z DMR for the treatment of rectal stenosis.