Lower calyceal and renal pelvic stones in preschool children: A comparative study of mini‐percutaneous nephrolithotomy versus extracorporeal shockwave lithotripsy

The mini-percutaneous nephrolithotripsy technique has significantly higher stone-free rates than extracorporeal shockwave lithotripsy for renal pelvic and lower calyceal stones (10-25 mm), with a lower retreatment rate and without a significant increase in complications.