Clinical application of super-mini PCNL (SMP) in the treatment of upper urinary tract stones under ultrasound guidance.

Purpose: To present the safety and efficacy of totally ultrasonography-guided Super-mini percutaneous nephrolithotomy (SMP) in the treatment of upper urinary tract stones both in children and adults.

Patients And Methods: We carried out SMP in 104 patients (including 48 children and 56 adults) with upper urinary tract stones between June 2015 and February 2017. All steps of renal access were performed by ultrasonography.