Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.
World J Gastrointest Surg. Jun 27, 2026; 18(6): 117909
Published online Jun 27, 2026. doi: 10.4240/wjgs.117909
Published online Jun 27, 2026. doi: 10.4240/wjgs.117909
Successful redrainage after failure of lumen-apposing metal stents by addressing flange-induced ostial occlusion: A case report
Dong-Xu Liao, Lin Yang, Yi Wen, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan Province, China
Hao-Xian Gou, Xiao Li, Qin Xie, Hao Luo, Yi Wen, Department of General Surgery, The General Hospital of Western Theater Command, Chengdu 610083, Sichuan Province, China
Co-first authors: Dong-Xu Liao and Lin Yang.
Co-corresponding authors: Hao Luo and Yi Wen.
Author contributions: Liao DX, Yang L, Luo H, and Wen Y contributed to design of the study; Liao DX , Yang L, Gou HX, Xie Q, and Li X contributed to data collection acquire; Liao DX and Yang L contributed to analyze data, and they contributed equally to this manuscript as co-first authors; Wen Y, Liao DX, and Yang L contributed to write the actual manuscript; Gou HX, Xie Q, Luo H, and Li X contributed to picture preparation; Wen Y and Luo H contributed to supervision and they contributed equally to this manuscript as co-corresponding authors. All authors have read and approved the final manuscript.
AI contribution statement: No AI tools were used. The main content of this manuscript (abstract, introduction, materials and methods, results, discussion, and conclusion) was not generated by AI. Nor were AI tools employed for manuscript polishing, translation, data analysis, or writing assistance.
Supported by the National Natural Science Foundation of China, No. 32471419; the National Clinical Key Subject of China, No. 41732113; and the General Hospital of Western Theater Command, No. 2024-YGLC-B03.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
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).
Corresponding author: Yi Wen, Department of General Surgery, The General Hospital of Western Theater Command, No. 270 Tianhui Road, Rongdu Avenue, Chengdu 610083, Sichuan Province, China. 13980881194@163.com
Received: December 18, 2025
Revised: January 21, 2026
Accepted: March 6, 2026
Published online: June 27, 2026
Processing time: 184 Days and 3.7 Hours
Revised: January 21, 2026
Accepted: March 6, 2026
Published online: June 27, 2026
Processing time: 184 Days and 3.7 Hours
Core Tip
Core Tip: This case report describes a rare complication of recurrent walled-off necrosis caused by mechanical occlusion of a branch cavity ostium by the edge of a lumen-apposing metal stent. This was successfully managed by endoscopic removal of the lumen-apposing metal stent, followed by salvage drainage with plastic stents, resulting in complete resolution of symptoms and radiographic findings. The case highlights a novel failure mechanism that underscores the importance of precise stent positioning and the effectiveness of this endoscopic salvage approach.