Giant urinoma in spinal cord injury: report of two cases.

Background: A urinoma is a cyst formed by the extravasation of urine from any constituent of the urinary tract; that is, via the kidney, ureter, urinary bladder, or the urethra. It may vary in its site and size according to its etiology, the point of the extravasation, and its duration and time of diagnosis. It commonly is associated with obstruction of the lower urinary tract by an impacted urinary calculus.