Eosinophilic cystitis: CT findings.

Eosinophilic cystitis (EC) is a rare form of bladder inflammation of uncertain etiology, characterized by eosinophilic inflammation of the bladder. Presenting clinical symptoms include hematuria, dysuria, frequency, and suprapubic pain. To our knowledge, there have been only two other reports of computed tomographic (CT) scan findings of EC. In both cases, the findings were thought to represent invasive bladder cancer. We present a case report of biopsy-proven EC with previously unreported CT scan findings.