Ultrasound-guided percutaneous radiofrequency ablation of small renal tumors: Clinical results and radiological evolution during follow-up.

Background: Treatment of small renal masses with percutaneous radiofrequency ablation (RFA) is under development. Data are limited regarding the oncologic efficacy and complication rates of ultrasound (US)-guided RFA.

Purpose: To retrospectively analyze results and factors predictive of incomplete ablation and local recurrence in patients treated for small renal tumors with US-guided percutaneous RFA.