Cuaj Can Urol Assoc
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Cuaj Can Urol Assoc · May 2015
External validation of the S.T.O.N.E. nephrolithometry scoring system.
We perform external validation of the S.T.O.N.E. nephrolithometry scoring system for the preoperative assessment of percutaneous nephrolithotomy (PCNL) outcomes. ⋯ Although this study externally validates the S.T.O.N.E. scoring system, its accuracy is comparable to stone size and number of involved calyces in predicting stone-free status post-PCNL.