Purpose: We report only the second known patient with pelvic lipomatosis associated with proliferative cystitis in the Japanese literature, a 43-year-old mildly obese Japanese male who demonstrated radiographic findings characteristic of pelvic lipomatosis.
Methods: Cystourethrography revealed an elevated pear-shaped bladder and an elongated and anteriorly displaced prostatic urethra. Computed tomography demonstrated excess intrapelvic fat that exhibited a density identical to that of subcutaneous fat tissue. Cystoscopic and histologic examination revealed concomitant proliferative cystitis composed of von Brunn's nest, cystitis cystica and cystitis glandularis, but no malignant cells.
Results/conclusions: As a result of dietary control for 15 months, the proliferative cystitis improved mildly, but the amount of fat was unchanged.