Case Report
Copyright ©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Dec 26, 2019; 7(24): 4366-4376
Published online Dec 26, 2019. doi: 10.12998/wjcc.v7.i24.4366
Kidney inflammatory myofibroblastic tumor masquerading as metastatic malignancy: A case report and literature review
Guo-Hui Zhang, Xiao-Yan Guo, Gao-Zhao Liang, Qing Wang
Guo-Hui Zhang, Xiao-Yan Guo, Graduate School, Guangdong Medical University, Zhanjiang 524000, Guangdong Province, China
Gao-Zhao Liang, Qing Wang, Department of Urology, The Second Affiliated Hospital, Shenzhen University, Shenzhen 518100, Guangdong Province, China
Author contributions: Zhang GH was a major contributor in writing the manuscript; Guo XY searched the database and analyzed the data; Liang GZ collected and provided clinical data for the patient; Wang Q was responsible for editing the article; all authors read and approved the final manuscript.
Supported by the Science and Technology Research and Development Foundation of Shenzhen, No. JCYJ20170307094039571.
Informed consent statement: Written informed consent was obtained from the patient for publication.
Conflict-of-interest statement: The authors declare that they have no competing interests to disclose.
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 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/
Corresponding author: Qing Wang, MD, PhD, Professor of Medicine, Department of Urology, The Second Affiliated Hospital, Shenzhen University, No. 118, Longjing Second Road, Baoan District, Shenzhen 518100, Guangdong Province, China. m13751317669@126.com
Telephone: +86-1892655191
Received: August 12, 2019
Peer-review started: August 12, 2019
First decision: October 24, 2019
Revised: November 8, 2019
Accepted: November 15, 2019
Article in press: November 15, 2019
Published online: December 26, 2019
Processing time: 134 Days and 23.3 Hours
Core Tip

Core tip: Herein, we present an elderly woman with kidney inflammatory myofibroblastic tumor (IMT) characterized by painless gross hematuria and misdiagnosed as a malignant tumor with ipsilateral adrenal metastases. Kidney IMT is a rare tumor entity with unknown etiology, diverse clinical symptoms, and imaging manifestations. Renal calculus was suspected to be one of the causes or drivers of IMT because of the constant destruction of the kidney mucosa. The diagnosis of IMT is considered a great challenge before operation. However, the awareness of its existence and deep understanding of its clinical characteristics are essential to avoid misdiagnosis in the differential diagnosis of a renal mass and to provide better management of such cases. Despite the uncertain biological behavior of this type of tumor, most patients get a favorable prognosis after surgery.