Inflammatory pseudotumor of the bladder.

Inflammatory pseudotumor of the bladder is an unusual benign lesion arising from the bladder submucosa. We present 2 cases and describe the clinical presentation, and radiographic and histological findings. This benign lesion must be differentiated histologically from several malignant lesions of the bladder. Complete surgical excision, either by transurethral resection or partial cystectomy, appears to be curative.