Pilot experience with real-time ultrasound guided percutaneous renal mass cryoablation.

Purpose: We describe our pilot experience with percutaneous cryoablation of renal masses using real-time sonography.

Materials And Methods: Three patients presented with 4 renal masses in 4 kidneys, which enhanced with contrast administration by computerized tomography or magnetic resonance imaging criteria. Renal neoplasm cryoablation was performed using general anesthesia with 17 gauge cryoneedles percutaneously placed into the renal tumor under real-time sonographic guidance.