The comparative analysis of clinical efficacy of minimally invasive percutaneous nephrolithotomy and flexible reteroscope lithtripsy for the management of 2-4 cm renal stones

Objective To evaluate the safety and efficacy of minimally invasive percutaneous nephrolithotomy and flexible reteroscope lithtripsy for the management of 2-4 cm renal stones. Methods In the study, 83 patients with renal stones (2-4 cm) underwent operation from February 2018 to December 2018. Among them, 83 patients were untreated with tubeless-mini-percutaneous nephrolithotomy (TMPCN), and 40 patients were treated with flexible reteroscope lithtripsy (FURS). The age, stone size, operation time, postoperative hospital stay, stone-free rates, and complication rate were analyzed statistically. Results All patients successfully completed the operation. Compared with the FURS group, the operation time of the TMPCN group was significantly shortened (91.650±12.528, 39.000±7.251, t=18.340, P 0.05) and complication rate (17.500%, 25.581%, χ2=0.800, P>0.05) were not statistically significant. Conclusion The TMPCN has a high success rate for 2-4 cm renal stone, and the operation time and the rate of clear stone are better than FURS. Key words: Tubeless-mini-percutaneous nephrolithotomy; Flexible reteroscope lithtripsy; Renal calculi