Conclusions: MPCNL is a therapeutic modality with advantages of high achievement ratio and slight injury especially for upper ureteric calculus with narrow ureter and ureter twist.
结论：MPCNL治疗输尿管上段结石，取石成功率高，创伤小，尤其在输尿管上段结石并发狭窄、扭曲时有良好的疗效。
Conclusions: MPCNL is a therapeutic modality with advantages of high achievement ratio and slight injury especially for upper ureteric calculus with narrow ureter and ureter twist.
结论：MPCNL治疗输尿管上段结石，取石成功率高，创伤小，尤其在输尿管上段结石并发狭窄、扭曲时有良好的疗效。
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