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Super multiple-tract minimally invasive percutaneous nephrolithotomy in one stage for treating complex renal stones: an initial experience

Year: 2025

Type: article

Abstract: BACKGROUND: Complex kidney stones usually require multi-tract percutaneous nephrolithotomy (PCNL) to remove the stone completely. The aim of this study was to evaluate the clinical feasibility and safety of super multiple-tract (≥ 5 tracts) minimally invasive percutaneous nephrolithotomy (Mini-PCNL) in one stage for treating complex renal stones. METHODS: From March 2019 to August 2023, the perioperative clinical data of 35 patients who underwent super multiple-tract Mini-PCNL for complex kidney stones in our institution were collected and analyzed, retrospectively. RESULTS: , respectively. The mean S.T.O.N.E. score was 10.8, including 21 patients (60.0%) with scores ≥ 11. The average Guy's stone score was 3.5. The mean number of percutaneous tracts was 6.3 (range, 5-13). The average surgery time and length of hospital stay were 149.8 min and 3.4 days, respectively. The mean serum creatinine level declined by 6.5 mol/L (P = 0.518) and the mean hemoglobin drop was 24.9 g/L (P < 0.001). The postoperative complication rate was 25.7%, including one case of severe complication (Clavien grade IV). The mean follow-up time was 3.5 months, and the average glomerular filtration rate declined by 1.1 ± 8.7 ml/min (P = 0.463). The stone free rate was 82.9% after one- stage super multiple-tract Mini-PCNL. CONCLUSION: When performed by experienced urologists, super multiple-tract Mini-PCNL for treating some complex renal stones in one stage is feasible and safe in enhancing the stone-free rate.

Source: BMC Urology

DOI: 10.1186/s12894-025-01933-1