结论：双j管引流不畅和输尿管部分梗阻是导致尿漏的主要原因。
Conclusions: Double J stent blockage and ureter partial obstruction are the main cause of urine leakage in patients who had underwent staghorn calculi nephrolithotomy.
目的建立可逆性输尿管部分梗阻(PUUO)动物模型，并观察部分梗阻肾脏形态学改变。
Objective To establish an experimental model of reversible partial unilateral ureter obstruction (PUUO), and investigate the morphological change caused by PUUO.
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