Malakoplakia of the ureter and bladder.

Malakoplakia is an uncommon granulomatous inflammatory disease that most often involves the urinary tract. Typically, there is an associated urinary tract infection (UTI) by coliform organisms. Histologically, the Michaelis-Gutmann bodies are the hallmark of this disease. Radiographically, malakoplakia may simulate other inflammatory processes or even neoplasm as demonstrated in these two cases.