Comparison of Mini-percutaneous Nephrolithotomy and Retrograde Intrarenal Surgery in Preschool-aged Children

Abstract

OBJECTIVE To compare the outcomes of mini-percutaneous nephrolithotomy (m-PCNL) and retrograde intrarenal surgery (RIRS) in treating renal stones in preschool-aged children. MATERIALS AND METHODS Forty-five patients treated with m-PCNL and 32 patients treated with RIRS for renal stones were compared retrospectively. The operative and postoperative outcomes of both groups were analyzed retrospectively. RESULTS The mean age and gender were similar between the groups. The mean stone size was 19.30 +/- 4.21 mm for the RIRS group and 21.06 +/- 5.61 mm for the PCNL group (P =.720). The mean operative times, fluoroscopy times, and hospitalization times were statistically higher in the PCNL group. The stone-free rates (SFRs) after a single procedure were 84.4% in the PCNL group and 75% in the RIRS group (P =.036). After auxiliary procedures, the overall SFRs reached 91.1% for the PCNL group and 90.6% for the RIRS group (P =.081). No major complications were observed for both groups. Minor complication (Clavien 1-3) rates were 15.5% and 12.5% for the PCNL and RIRC group, respectively (P =.385). CONCLUSION RIRS has some advantages over PCNL such as shorter hospitalization times, shorter fluoroscopy times, and shorter operative time in treating renal stones. However, PCNL achieves higher SFR after a single session. (C) 2016 Elsevier Inc.