Traumatic arterio-ureteral fistula: "hematuria" without urine.

A case is presented in which a patient with a gunshot wound in the abdomen sustained a traumatic arterio-ureteral fistula with resultant continual output of bloody fluid from the urethral catheter in the absence of any real production of urine. It is important to recognize the possibility of false reassurance regarding the patient's general status by supposing fluid thus produced to be an indication of actual urine formation.