Renal ultrasonography demonstrated severe left hydronephrosis and hydroureter to the level of the distal ... J' ureteric stent 1 month later. A retrograde study showed a normal ureter.

The RELIEF ureteral stent, the brainchild of Dr. Lee Ponsky, chairman of UH’s Urology Institute, has been cleared by the U.S. Food and Drug Administration for preventing vesicoureteral reflux, a major ...