Standard vs Mini-PCNL for the Treatment of Stone Disease

Inclusion Criteria: * Patients planned for PCNL at participating institutions * Age ≥ 18 years old * Male and female patients * Patients of all ethnic backgrounds * Stone size 10-20mm Patients must be capable of giving informed consent and must be capable and willing to enroll and participate fully with the study. Exclusion Criteria: * Conversion to open procedure * Multiple access tracts * Anticoagulated or history of coagulopathy * Preoperative ureteral stent or nephrostomy tube placement * Technical problems/impossibility of localizing the stone on the day of intervention Patients unable to give informed consent or unwilling to enroll or participate in the study will be excluded.