{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:22:18Z","timestamp":1787026938740,"version":"build-2736575974"},"reference-count":22,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T00:00:00Z","timestamp":1771891200000},"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:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Urachal inflammatory myofibroblastic tumor (IMT) is a rare mesenchymal neoplasm characterized by non-specific clinical and imaging features, which renders it susceptible to clinical misdiagnosis. Complete surgical resection is the preferred treatment method.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case presentation<\/jats:title>\n                    <jats:p>We herein report a case of urachal IMT in a 12-year-old male child who presented with dysuria for 4 days and abnormal urine color for 2 days. Preoperative ultrasonography and contrast-enhanced computed tomography (CT) both suggested an infected urachal cyst. Laparoscopic resection of the urachal mass was initially performed; however, intraoperative exploration identified bladder invasion by the mass, prompting an additional partial cystectomy. Postoperative histopathological examination confirmed the diagnosis of urachal IMT with bladder invasion. No adjuvant therapy was administered postoperatively, and the patient remained free of recurrence and metastasis during a 6-month follow-up period.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>In the differential diagnosis of pediatric urachal lesions, IMT should be considered, especially when adjacent tissue invasion is present. Enhanced understanding of urachal IMT can assist clinicians in the early recognition and precise management of this tumor.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fonc.2026.1780322","type":"journal-article","created":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T05:18:54Z","timestamp":1771910334000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Case Report: Urachal inflammatory myofibroblastic tumor with bladder invasion"],"prefix":"10.3389","volume":"16","author":[{"given":"Xiaomeng","family":"Liu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dongsheng","family":"Bai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,2,24]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.3390\/cancers17081327","article-title":"Inflammatory myofibroblastic tumor: an updated review","volume":"17","author":"Choi","year":"2025","journal-title":"Cancers (Basel)"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.32604\/or.2024.050350","article-title":"Inflammatory myofibroblastic tumor from molecular diagnostics to current treatment","volume":"32","author":"chmiel","year":"2024","journal-title":"Oncol Res"},{"key":"B3","doi-asserted-by":"publisher","DOI":"10.1016\/S0096-5588(20)32030-4","article-title":"Two interesting benign lung tumors of contradictory histopathology","volume":"9","author":"Brunn","year":"1939","journal-title":"J Thorac Surg"},{"key":"B4","doi-asserted-by":"publisher","DOI":"10.1007\/s11864-023-01144-6","article-title":"Update of diagnosis and targeted therapy for ALK+ Inflammation myofibroblastic tumor","volume":"24","author":"Wang","year":"2023","journal-title":"Curr Treat Options Oncol"},{"key":"B5","article-title":"Recurrent involvement of 2p23 in inflammatory myofibroblastic tumors","volume":"59","author":"Griffin","year":"1999","journal-title":"Cancer Res"},{"key":"B6","doi-asserted-by":"publisher","first-page":"70","DOI":"10.32074\/1591-951X-213","article-title":"The 2020 WHO Classification of Soft Tissue Tumours: news and perspectives","volume":"113","author":"Sbaraglia","year":"2021","journal-title":"Pathologica"},{"key":"B7","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejso.2024.108388","article-title":"Treatment and outcomes in pediatric inflammatory myofibroblastic tumors - A systematic review of published studies","volume":"50","author":"Raitio","year":"2024","journal-title":"Eur J Surg Oncol"},{"key":"B8","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":"B9","doi-asserted-by":"publisher","DOI":"10.1007\/s003830000352","article-title":"Pseudosarcoma of the bladder associated with residual urachus in a 3-year-old girl","volume":"16","author":"Meyer","year":"2000","journal-title":"Pediatr Surg Int"},{"key":"B10","doi-asserted-by":"publisher","DOI":"10.1016\/j.urology.2004.02.037","article-title":"Urachal inflammatory myofibroblastic tumor with ALK gene rearrangement: a study of urachal remnants","volume":"64","author":"Nascimento","year":"2004","journal-title":"Urology"},{"key":"B11","doi-asserted-by":"publisher","DOI":"10.1016\/j.urology.2005.09.044","article-title":"Inflammatory pseudotumor of urachus mimicking invasive carcinoma of bladder","volume":"67","author":"Tunca","year":"2006","journal-title":"Urology"},{"key":"B12","doi-asserted-by":"publisher","DOI":"10.4103\/0377-4929.178240","article-title":"Anaplastic lymphoma kinase positive inflammatory myofibroblastic tumor of the urachus: A rare neoplasm in an unusual location","volume":"59","author":"Venkatesh","year":"2016","journal-title":"Indian J Pathol Microbiol"},{"key":"B13","doi-asserted-by":"publisher","first-page":"e13619","DOI":"10.1097\/MD.0000000000013619","article-title":"ALK-negative urachal inflammatory myofibroblastic tumor in an elderly female: A case report","volume":"97","author":"Wang","year":"2018","journal-title":"Med (Baltimore)"},{"key":"B14","doi-asserted-by":"publisher","DOI":"10.1016\/j.eucr.2021.101575","article-title":"A rare case of urachal inflammatory myofibroblastic tumor","volume":"36","author":"George","year":"2021","journal-title":"Urol Case Rep"},{"key":"B15","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199508000-00001","article-title":"Extrapulmonary inflammatory myofibroblastic tumor (inflammatory pseudotumor). 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