Outcomes and Costs Following Mini-percutaneous Nephrolithotomy or Flexible Ureteroscopic Lithotripsy for 1-2–cm Renal Stones: Data From a Prospective, Randomized Clinical Trial
Rahul Dutta, Prabhakar Mithal, Ilan Klein, Manish R. Patel, Jorge Gutiérrez-Aceves
Abstract
PURPOSE: We evaluate the outcomes of ureteroscopy vs prone mini-percutaneous nephrolithotomy for 1-2-cm renal stones using a 2-group parallel randomized control trial. MATERIALS AND METHODS: Adult patients presenting with renal stones between 1 and 2 cm were randomized. Exclusion criteria included solitary kidney, multiple stones, and comorbidities precluding prone positioning. Block randomization was performed and was opened to the surgeon the morning of the procedure. Stone-free rate was evaluated by computed tomography 1-30 days postoperatively. Complications, re-treatment rates, and costs were evaluated. RESULTS: = .2541). CONCLUSIONS: In a prospective, randomized, controlled clinical trial using a 2-mm residual stone burden cutoff, mini-percutaneous nephrolithotomy was more likely to render patients stone-free than flexible ureteroscopy. Complications, surgical times, and operating margins did not vary between the approaches.