経皮的腎尿管砕石術の臨床成績と結石再発率

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PNL開始後11年間の173例178腎の治療成績をまとめた.完全排石は61.8%,4mm以下の残石は34.3%であった.PNL後半年以上経過し,完全排石が確認された症例は105例であった.これらの累積再発率は1年4.2%,3年16.6%,5年29.2%,7年34.4%,10年55.4%であった.Risk factorで統計学的に有意なものはみられなかった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 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.