PMID- 36312673 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221102 IS - 2168-8184 (Print) IS - 2168-8184 (Electronic) IS - 2168-8184 (Linking) VI - 14 IP - 9 DP - 2022 Sep TI - A Large Inflammatory Myofibroblastic Tumor of the Urinary Bladder in a Parturient Treated by Partial Cystectomy: Case Report and Literature Review. PG - e29556 LID - 10.7759/cureus.29556 [doi] LID - e29556 AB - Inflammatory myofibroblastic tumor (IMT) is a rare type of tumor composed mainly of fibroblastic and myofibroblastic spindle cells, with an inflammatory infiltrate of lymphocytes, plasma cells, and eosinophils. IMT may arise from different organs and sites, but it is infrequent to arise from the urinary bladder and usually manifests as hematuria. We report a case of a 24-year-old pregnant woman who presented to our hospital with gross hematuria. After further workup, we concluded that she had this extremely rare tumor, which was resected eventually with a partial cystectomy. Although the diagnosis of these kinds of tumors is usually made by anaplastic lymphoma kinase (ALK) using immunohistochemistry and detecting ALK gene translocation using fluorescence in situ hybridization (FISH), they were negative in our study; hence, we relied mainly on the morphological features of the tumor for the diagnosis. CI - Copyright (c) 2022, Buksh et al. FAU - Buksh, Omar AU - Buksh O AD - Department of Urology, King Faisal Specialist Hospital and Research Centre, Jeddah, SAU. FAU - Almalki, Abdullah M AU - Almalki AM AD - Department of Urology, King Faisal Specialist Hospital and Research Centre, Jeddah, SAU. FAU - Khogeer, Ahmed AU - Khogeer A AD - Department of Urology, King Faisal Specialist Hospital and Research Centre, Jeddah, SAU. FAU - Al-Maghrabi, Jaudah AU - Al-Maghrabi J AD - Department of Pathology, Faculty of Medicine, King Abdulaziz University, Jeddah, SAU. FAU - Alakraa, Mahmoud AU - Alakraa M AD - Department of Urology, King Faisal Specialist Hospital and Research Centre, Jeddah, SAU. LA - eng PT - Case Reports DEP - 20220925 PL - United States TA - Cureus JT - Cureus JID - 101596737 PMC - PMC9595141 OTO - NOTNLM OT - anaplastic lymphoma kinase OT - inflammatory myofibroblastic tumor OT - myofibroblast OT - pseudotumor OT - urinary bladder COIS- The authors have declared that no competing interests exist. EDAT- 2022/11/01 06:00 MHDA- 2022/11/01 06:01 PMCR- 2022/09/25 CRDT- 2022/10/31 04:42 PHST- 2022/09/25 00:00 [accepted] PHST- 2022/10/31 04:42 [entrez] PHST- 2022/11/01 06:00 [pubmed] PHST- 2022/11/01 06:01 [medline] PHST- 2022/09/25 00:00 [pmc-release] AID - 10.7759/cureus.29556 [doi] PST - epublish SO - Cureus. 2022 Sep 25;14(9):e29556. doi: 10.7759/cureus.29556. eCollection 2022 Sep.