The total stone free rate was 90%.
总的结石排净率为90%。
The stone free rate of URL was 100% for lower ureteral stones, There was no ureteral perforation and avulsion happened.
URL对输尿管中下段结石取净率为100%，术中无输尿管穿孔、撕脱等并发症发生。
MPCNL was more effective in treating impacted upper ureteral calculi and had higher stone-free rate.
结论MPCNL治疗输尿管上段嵌顿结石疗效更佳，结石清除率高。
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