Objective To explore of percutaneous antegrade endopyelotomy using the holmium laser for ureteropelvic junction obstruction(UPJO)associated with upper tract stones.

• 目的探讨经皮肾微造瘘钬激光腔内切开治疗肾盂输尿管交界处狭窄(UPJO)的方法及疗效。