https://doi.org/10.4081/aiua.2025.14286
Extracorporeal shock wave lithotripsy vs percutaneous nephrolithotomy, complication rate and recurrence rate in management of pediatric renal stone, a prospective randomized trial
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Published: 29 October 2025
Background: The mini-percutaneous nephrolithotomy (PNL) technique has introduced notable advantages, establishing it as a compelling option compared to extracorporeal shock wave lithotripsy (SWL) in managing renal stones in the pediatric population. We aimed to compare the outcomes of both techniques as regards effectiveness, morbidity, and stone recurrence.
Methods: A prospective, randomized superiority trial included 128 pediatric patients with a solitary renal stone measuring 10-20 mm. Group I included patients who underwent mini-PNL (n=65), while Group II included those managed with SWL (n=63). The primary endpoint was the stone-free rate (SFR) eight weeks after the procedure, while the secondary endpoints were operative time, hospital stay, and postoperative complications. The stone recurrence rate was assessed at 2-year follow-up.
Results: The mean age of the patients ± SD was 8.48±4.08 years, and the mean size of the stones was 17.13±2.45 millimeters. The study arms had comparable demographics and stone characteristics. The mean operative time was significantly lower in Group I than in Group II (51.38±14.02 min vs 63.70±16.90 min, respectively; p=0.001). We reported a perioperative complication rate of 26.2% in Group I, compared to 20.6% in Group II, with a statistically insignificant difference (p=0.461). SFR was 93.8% and 41.3% for groups I and II, respectively (p<0.001). The stone recurrence was reported in 4 cases (6.1%) in Group I compared to 10 cases (15.8%) in Group II (p=0.005).
Conclusions: Our study demonstrates that Mini-PNL has a higher stone-free rate than SWL for managing renal stones of 10-20 mm in children. While both techniques have comparable complication rates, mini-PNL has higher intraoperative complications and longer hospital stays. Additionally, stone recurrence is more common after SWL compared to mini-PNL.
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