Abstract：Objective:To analyze the reasons of renal dysfunction after percutaneous nephrolithotomy to prevent the complication. Methods:The clinical data of 11 cases of percutaneous nephrolithotomy were retrospectively reviewed, including ultrasound, MRU, IVP and ECT results before and after operation. Results:In 11 cases with severe renal function impairment and creatinine filtration rate lower than 20% of the normal, ECT showed flat varicose and IVP was not displayed. Nine cases had severe hydronephrosis, one had no obvious hydronephrosis, and one had renal atrophy. Preoperative ureteropelvic junction stenosis was identified in 7 cases. Eight cases received ureteropelvic junction stenosis operation, and three cases were subjected to removal of the kidney. Conclusions:The most important reason of postoperative renal dysfunction after percutaneous nephrolithotomy is ureteropelvic junction stenosis, which needs lithotripsy of ureteral obstruction at the same time, and postoperative regular follow-up is necessary.
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