PCNL is an up-to-date endoscopic method of nephrolithiasis treatment, characterized by high efficacy and low invasiveness. In this study we analyze our own experiences in nephrolithiasis treatment. In St. Luke Hospital, Tarnow PCNL has been the leading method of treatment of kidney stones since 1997. Low incidence of complications allows to choose this procedure in more than 90% of nephrolithiasis patients.