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Malakoplakia mimics urinary bladder cancer: A case report

Author(s): Ristić-Petrović Ana | Stojnev Slavica | Janković-Veličković Ljubinka | Marjanović Goran

Journal: Vojnosanitetski Pregled
ISSN 0042-8450

Volume: 70;
Issue: 6;
Start page: 606;
Date: 2013;
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Keywords: malakoplakia | urinary bladder | diagnosis | differential | urinary bladder neoplasms | immunohistochemistry

Introduction. Malakoplakia is an unusual and very rare chronic inflammatory disease. In bladder especially it can mimic malignancy and lead to serious misdiagnosis. Case report. We presented a case of a middle-aged woman with persistent macrohematuria and cystoscopically polypoid bladder mass that resembled a neoplastic process. The final diagnosis was based on cystoscopic biopsy and microscopic findings of acidophilic, foamy histiocytes with the presence of Michaelis-Gutmann inclusions which are characteristic for diagnosis of malakoplakia. Immunohistochemistry confirmed diagnosis by demonstrating CD68-positive macrophages. Conclusion. Urinary bladder malakoplakia should be considered in patients with persistent urinary tract infections and tumor mass at cystoscopy. Early identification with prompt antibiotic treatment can be helpful in avoiding unnecessary surgical interventions and in preventing development of possible complications. [Projekat Ministarstva nauke Republike Srbije, br. 175092]

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