title: [Clinical outcome of percutaneous nephrolithotripsy and recurrence of stones].
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.
authors.affiliation: Sapporo Sanjukai Urological Hospital.
authors.forename: H
authors.initials: H
authors.lastname: Nakajima
authors.forename: H
authors.initials: H
authors.lastname: Tanda
authors.forename: S
authors.initials: S
authors.lastname: Kato
authors.forename: S
authors.initials: S
authors.lastname: Ohnishi
authors.forename: T
authors.initials: T
authors.lastname: Ujiie
authors.forename: A
authors.initials: A
authors.lastname: Nanbu
authors.forename: T
authors.initials: T
authors.lastname: Ando
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000737:chemistry / Q000209:etiology / Q000628:therapy; D008096:Lithotripsy; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D016896:Treatment Outcome; D014514:Ureteral Calculi / Q000737:chemistry / Q000209:etiology / Q000628:therapy; D014545:Urinary Calculi / Q000737:chemistry / Q000209:etiology* / Q000628:therapy*