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  • Title: [Clinical outcome of percutaneous nephrolithotripsy and recurrence of stones].
    Author: Nakajima H, Tanda H, Kato S, Ohnishi S, Ujiie T, Nanbu A, Ando T.
    Journal: Hinyokika Kiyo; 1997 Aug; 43(8):549-53. PubMed ID: 9310776.
    Abstract:
    A total of 178 renal units in 173 patients with renal and upper ureteral calculi were treated by percutaneous nephrolithotripsy (PNL) between November 1984 and October 1995. PNL was performed as a monotherapy in 70 kidneys, while extracorporeal shock wave lithotripsy (ESWL) was combined in 108 kidneys. At the time discharged 110 (61.8%) kidneys were stone-free and the overall success rate, defined as no residual stone or fragments < 4 mm, was 96.1%. The stone-free rate was significantly lower (44.2%) for staghorn renal calculi. For 105 stone-free kidneys with > 6 months of follow-up, the cumulative stone recurrence rate was 4.2% at 1 year, 16.6% at 3 years, 29.2% at 5 years, 34.4% at 5 years and 55.4% at 10 years. None of the pretreatment parameters, such as stone size, number, location, composition, past history of urolithiasis and upper urinary tract obstruction, had a significant influence on stone recurrence.
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