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©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Surg. Aug 27, 2025; 17(8): 107558
Published online Aug 27, 2025. doi: 10.4240/wjgs.v17.i8.107558
Published online Aug 27, 2025. doi: 10.4240/wjgs.v17.i8.107558
Invasive inflammatory fibrotic polyp of the duodenum: A case report
Fen-Ming Zhang, Long-Gui Ning, Jing-Jie Wang, Hua-Tuo Zhu, Hong-Tan Chen, Department of Gastroenterology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
Mei-Bao Feng, Department of Pathology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
Author contributions: Zhang FM and Ning LG contributed to the data collection and writing; Wang JJ and Zhu HT provided knowledge related to endoscopic ultrasonography and provided assistance in the collection of case data; Feng MB provided the pathological analysis and pathological images; Chen HT contributed to conceptualization and supervision; all authors have read and approved the final version to be published.
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).
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: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Hong-Tan Chen, MD, Chief Doctor, Department of Gastroenterology, The First Affiliated Hospital, Zhejiang University School of Medicine, No. 79 Qingchun Road, Hangzhou 310003, Zhejiang Province, China. chenhongtan@zju.edu.cn
Received: March 26, 2025
Revised: April 23, 2025
Accepted: June 23, 2025
Published online: August 27, 2025
Processing time: 153 Days and 0.6 Hours
Revised: April 23, 2025
Accepted: June 23, 2025
Published online: August 27, 2025
Processing time: 153 Days and 0.6 Hours
Core Tip
Core Tip: An inflammatory fibrotic polyp (IFP) of the gastrointestinal tract is generally considered benign and noninvasive. An IFP in the duodenum is very rare. Here we report the case of a mass in the duodenal bulb involving the pylorus. Based on imaging and endoscopic findings, a duodenal stromal tumor was considered. The patient underwent surgery, with a pathologic diagnosis of duodenal IFP and tumor invasion of the subserosa, which indicated that IFP is also specifically invasive. Due to the special location of duodenal IFP, accurate diagnosis should be made so as to avoid excessive surgical treatment.