Complete supine percutaneous nephrolithotomy (csPCNL) in patients with and without a history of stone surgery: safety and effectiveness of csPCNL.

To determine the effects of previous stone surgery on the results of complete supine percutaneous nephrolithotomy (csPCNL), we reviewed 81 patients undergoing csPCNL at our center between March 2008 and March 2009. The principal aim in our study was whether prior renal surgery affects the outcome of PCNL. The results of the study were analyzed using SPSS 11 software.