Result: Stone free rate was 76.5% after PCNL combinated with one ESWL,88.2% combinated with two ESWL,94.1% combinated with three ESWL.

• 结果:经皮肾微造瘘取石术结合一次ESWL治疗后结石清除率为76.；5%25；二次ESWL治疗后结石清除率88