9Ku JH, Lee SW, Jeon HG, et al. Percutaneous nephrostomy versus indwelling ureteral stents in the management of extrinsic ureteral obstruction in advanced malignancies: are there differences [J]? Urology, 2004, 64(5): 895-899.
10Chitale SV, Scott-Barrett S, Ho ETS, et al. The management of ureteric obstruction secondary to malignant pelvic disease[J]. Clin Radiol, 2002, 57(12): 1118-1121.