A pseudotumoral edema of the urinary bladder secondary to an intramural impacted ureteral lithiasis.

A case of pseudotumor of the urinary bladder secondary to intramural lithiasis is reported. Computer tomography, cystoscopy of the mass and cytology suggested a malignant tumor. A transurethral biopsy from the tumor was therefore performed, but it showed tissue covered with normal transitional cell epithelium but no signs of malignancy. Pseudotumoral edema of the bladder is easily mistaken for a malignant neoplasm (1, 2, 3).