Percutaneous nephrolithotripsy: comparison of standard and minimally invasive technologies

Introduction: Perspectives and possibilities of urolithiasis surgical treatment have greatly increased during the last years. Aim: A comparative evaluation of efficacy of standard percutaneous nephrolithotripsy and mini-nephrolitholapaxy in patients with large (up to 2,5 - 3 cm) renal and ureteral stones. Materials and methods: In urology clinic of National Medical and Surgical Center named after N.I. Pirogov 215 patients were treated for nephrolithiasis between May 2015 and December 2017. Standard (SNL) nephrolithotripsy and extraction (nephrolithola-paxy) requiring a 30 Ch access was performed in 112, who comprised group 1. Percutaneous mini-nephrolitholapaxy (MNL) through 15 (16,5) Ch was performed in 103 patients (group 2). Results: Stone size in two groups was within set limits, with 43% of stones being smaller and 57% stones being larger than 12 cm3. Solitary stones were found in 82% (85 in group 1, 91 in group 2) patients, staghorn calculi were found in 18% (in 27 and 12 respectively) patients...