Percutaneous ultrasonic lithotripsy.

Percutaneous renal calculus removal has evolved rapidly over the past 4 years. Percutaneous ultrasonic lithotripsy (PUL), based on access to the kidney via a percutaneous nephrostomy track, consists of fragmentation and removal of calculi under visual nephroscopic control. Clinical experience has proven this modality to be safe, reliable, and effective for treatment of symptomatic renal calculus disease. This article reviews our PUL technique and results.