{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T10:32:27Z","timestamp":1785321147859,"version":"3.55.0"},"reference-count":10,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,6,6]],"date-time":"2025-06-06T00:00:00Z","timestamp":1749168000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Oncol."],"abstract":"<jats:p>Renal inflammatory myofibroblastic tumor is a very rare disease that primarily occurs in the renal parenchyma and may even involve the renal pelvis. This study presents a case of renal inflammatory myofibroblastic tumor with exophytic growth, whose imaging appearance resembles that of a solitary perirenal mass. A 75-year-old male patient was referred to our hospital for further treatment after a retroperitoneal lesion was discovered and suspected at another hospital. Imaging examination revealed multiple cysts in both kidneys and a lesion located anterior to a cyst at the lower pole of the left kidney. Due to the presence of the cysts, the relationship between the lesion and the kidneys was unclear. We performed multiplanar reconstruction of the tumor images and generated a temporal signal curve. Based on these imaging findings, we determined that the lesion was a benign tumor of renal origin and could be surgically removed. Finally, pathological examination confirmed the diagnosis of a renal inflammatory myofibroblastic tumor. Postoperative telephone follow-up revealed that the patient was alive, and a follow-up abdominal CT performed at the local hospital showed no recurrence.<\/jats:p>","DOI":"10.3389\/fonc.2025.1543858","type":"journal-article","created":{"date-parts":[[2025,6,6]],"date-time":"2025-06-06T04:10:35Z","timestamp":1749183035000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Case Report: A case report of the diagnosis of renal inflammatory myofibroblastic tumor"],"prefix":"10.3389","volume":"15","author":[{"given":"Wenjie","family":"Wu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tiantian","family":"Liang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hui","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,6,6]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1016\/j.advms.2022.02.002","article-title":"What do we know about inflammatory myofibroblastic tumors?\u2014A systematic review","volume":"67","author":"Siemiona","year":"2022","journal-title":"Adv Med Sci"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.21037\/tau-23-471","article-title":"Inflammatory myofibroblastic tumor of the genitourinary tract: a narrative review","volume":"13","author":"Moring","year":"2024","journal-title":"Transl Androl Urol"},{"key":"B3","doi-asserted-by":"publisher","DOI":"10.1016\/j.eucr.2021.101620","article-title":"Renal inflammatory myofibroblastic tumor: A case report","volume":"37","author":"Ivanov","year":"2021","journal-title":"Urol Case Rep"},{"key":"B4","doi-asserted-by":"publisher","DOI":"10.1016\/j.radcr.2020.05.043","article-title":"Rare presentation of inflammatory myofibroblastic tumor in the kidney","volume":"15","author":"Abduljawad","year":"2020","journal-title":"Radiol Case Rep"},{"key":"B5","doi-asserted-by":"publisher","DOI":"10.1016\/s0022-5347(17)61175-3","article-title":"Plasma cell granuloma of the renal pelvis","volume":"107","author":"Davides","year":"1972","journal-title":"J Urol"},{"key":"B6","doi-asserted-by":"publisher","DOI":"10.12998\/wjcc.v7.i24.4366","article-title":"Kidney inflammatory myofibroblastic tumor masquerading as metastatic Malignancy: A case report and literature review","volume":"7","author":"Zhang","year":"2019","journal-title":"World J Clin Cases"},{"key":"B7","article-title":"WHO Classification of Tumours Editorial Board. WHO classification of tumours","author":"Sbaraglia","year":"","journal-title":"Soft tissue and bone tumours"},{"key":"B8","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-200305000-00009","article-title":"Inflammatory myofibroblastic tumors of the kidney: A clinicopathologic and immunohistochemical study of 12 cases","volume":"27","author":"Kapusta","year":"2003","journal-title":"Am J Surg Pathol"},{"key":"B9","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000001181","article-title":"A renal inflammatory myofibroblastic tumor similar to cystic renal cell carcinoma: one case report","volume":"94","author":"Liang","year":"2015","journal-title":"Medicine"},{"key":"B10","doi-asserted-by":"publisher","DOI":"10.1097\/01.pas.0000213393.57322.c7","article-title":"Inflammatory myofibroblastic tumor: comparison of clinicopathologic, histologic, and immunohistochemical features including ALK expression in atypical and aggressive cases","volume":"31","author":"Coffin","year":"2007","journal-title":"Am J Surg Pathol"}],"container-title":["Frontiers in Oncology"],"original-title":[],"link":[{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fonc.2025.1543858\/full","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,6]],"date-time":"2025-06-06T04:10:36Z","timestamp":1749183036000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fonc.2025.1543858\/full"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,6,6]]},"references-count":10,"alternative-id":["10.3389\/fonc.2025.1543858"],"URL":"https:\/\/doi.org\/10.3389\/fonc.2025.1543858","relation":{},"ISSN":["2234-943X"],"issn-type":[{"value":"2234-943X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,6,6]]},"article-number":"1543858"}}