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KMID : 0358319950360050536
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Korean Journal of Urology
1995 Volume.36 No. 5 p.536 ~ p.542
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Analysis of the Results of Percutaneous Nephrolithtomy for Staghorn Calculi: Based on Stone Surface Area
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Abstract
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Though high stone free rates were reported with ESWL monotherapy or anatrophic nephrolithotomy, percutaneous nephrolithotomy with or without ESWL appears to be the procedure of choice for most staghom calculi.
A total of 41 patients with staghorn calculi underwent percutaneous nephrolithotomy (PNL) alone or primary percutaneous debulking followed by extracoporeal shock wave lithotripsy (ESWL) of residual stone fragments.
For the objective analysis of the results of PNL, stone removal rate was calculated with stone surface area which was determined by computer analyzer. For staghorn calculi smaller than 2000 ㎟ (38/41), a mean stone removal rate of about 90% was
achieved
in the PNI. When stone surface area exceeded 2000 ㎟(3/410, the mean stone removal rate was 78.8%. The stone removal rates stratified by stone surface area were not significantly differenct. The stone free rate was 31.7% in the PNL only but 75.6%
in the
PNL with or without ESWL. The higher mean stone removal rate and stone free rate was achieved in the kidneys with non-dilated collecting system than those with hydronephrosis, but it was not statistically significant.
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