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  • Title: Pediatric inflammatory bladder tumors: myofibroblastic and eosinophilic subtypes.
    Author: Netto JM, Pérez LM, Kelly DR, Joseph DB.
    Journal: J Urol; 1999 Oct; 162(4):1424-9. PubMed ID: 10492229.
    Abstract:
    PURPOSE: Benign bladder tumors are rare in children. A number of descriptive terms have previously been used to describe inflammatory tumors with myofibroblastic proliferation or eosinophilic infiltration. We present our experience with these tumors and review the literature. MATERIALS AND METHODS: We retrospectively reviewed the records of all children presenting with a benign focal bladder mass during the last 5 years, including 2 girls and 3 boys 2 to 12 years old (mean age 7). RESULTS: Presenting symptomatology included irritative voiding symptoms, suprapubic pain and hematuria. All bladder masses were diagnosed by ultrasonography and all patients underwent transurethral resection. Three children who had an inflammatory bladder tumor with myofibroblastic features required open tumor excision with preservation of the bladder. In the 2 remaining children urine culture was positive preoperatively and the diagnosis was an inflammatory bladder tumor with eosinophilic infiltration. Transurethral resection of the mass was performed without partial cystectomy. CONCLUSIONS: Inflammatory myofibroblastic and eosinophilic tumors represent forms of focal cystitis with a tumefactive component. Differentiation from the malignant bladder neoplasms of childhood has important consequences for therapy. Management of these benign but aggressive inflammatory lesions involves local control by endoscopic or open surgery with bladder preservation. We encourage refined use of the terminology for inflammatory myofibroblastic and eosinophilic tumors.
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