Two unusual duplication anomalies of the urinary tract: use of percutaneous urography.

We performed suprapubic percutaneous urography in two patients to diagnose unusual duplication anomalies of the urinary tract, since preoperative diagnosis was unclear after routine noninvasive studies. In both patients standard suprapubic puncture technique was employed. The procedure was used to confirm the diagnosis of duplication of the bladder in one case and to establish the site of origin of a ureterocele in the other. The technique employed in suprapubic cystography may be extended to the diagnosis of unusual cystic abnormalities in the pelvis that may be of urinary tract origin.