Case Report
Copyright ©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. May 14, 2025; 31(18): 105443
Published online May 14, 2025. doi: 10.3748/wjg.v31.i18.105443
Idiopathic retroperitoneal fibrosis arising from peritoneal space: A case report and review of literature
Zhen-Yu Dong, Hai-Bin Zhu
Zhen-Yu Dong, Department of Radiology, Qingdao Huangdao District People’s Hospital, Qingdao 266400, Shandong Province, China
Hai-Bin Zhu, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
Author contributions: Dong ZY and Zhu HB designed the research study and performed the research; All authors have read and approve the final manuscript.
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: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Hai-Bin Zhu, MD, Associate Chief Physician, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, No. 52 Fucheng Road, Haidian District, Beijing 100142, China. 13811403328@163.com
Received: January 27, 2025
Revised: March 27, 2025
Accepted: April 24, 2025
Published online: May 14, 2025
Processing time: 110 Days and 18.3 Hours
Core Tip

Core Tip: This study reports an unusual case of idiopathic retroperitoneal fibrosis that was incidentally discovered on magnetic resonance imaging and 18F-fluorodeoxyglucose positron emission tomography imaging. The mass was primarily situated in the peritoneal cavity rather than the retroperitoneal space, encroaching upon adjacent organs such as the pancreatic head, the hepatic flexure of the colon, and part of the small intestine. The imaging diagnosis can be particularly difficult when the lesion originates in the peritoneal space, and a biopsy may be required prior to surgery.