In urinary stone disease, several nephrolithotomy scores have been used, which allow predicting the efficiency and rate of complications of percutaneous nephrolithotomy (PCNL). However, the most optimal score is still under debate. The aim of our work was to perform a review of the existing nephrolithotomy scores for PCNL.
A search for articles on nephrolithotomy systems to evaluate PCNL results was done. After reviewing the literature over the past 10 years, 110 publications were initially selected. Subsequently, 68 of them were excluded, and 42 English-language articles and 2 domestic publications were included in the non-systematic literature review.
Currently, a total of 4 nephrolithotomy scores for PCNL are used. Each of them is based on certain factors, for which, depending on the characteristics of the stone and kidney anatomy, specific points are assigned. The final score allows to predict the results of PCNL. Among the nephrolithotomy scales, Guy’s, S.T.O.N.E. and CROES are most commonly described, while S-ReSC is used less often. Among the surveyed urologists, S.T.O.N.E. was used by 29% of respondents, compared to 10.3%, 8.3% and 2.1% for Guy’s scoring system, CROES nomogram and S-ReSC, respectively. Various authors have evaluated the efficacy and complications of PCNL using two or three nephrolithotomy scores, which established a correlation between pre- and postoperative results.
Nephrolithotomy scores allows to establish the complexity of each clinical case and predict the results of PCNL.

Keywords: nephrolithotomy scores, urinary stone disease, percutaneous nephrolithotomy, kidney stones, urolithiasis