结石常始发在下肾盏和肾盂输尿管连接处可为单个或多发，其大小甚悬殊，小的如粟粒，甚至为泥沙样，大的可以达到直径3厘米。
Calculus usually located in the connections between the end part of calyx and ureter. Their sizes can as small as sandy form or even large up to 3 cm in diameter.
结石常始发在下肾盏和肾盂输尿管连接处可为单个或多发，其大小甚悬殊，小的如粟粒，甚至为泥沙样，大的可以达到直径3厘米。
Calculus usually located in the connections between the end part of calyx and ureter. Their sizes can as small as sandy form or even large up to 3 cm in diameter.
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