Radiofrequency ablation (RFA) and microwave ablation (MWA) are treatments that use image guidance to place a needle through the skin into a renal tumor.

In RFA, high-frequency electrical currents are passed through an electrode, creating a small region of heat.

In MWA, microwaves are created from the needle to create a small region of heat.

The heat destroys the lung cancer cells.

RFA and MWA may be used to treat renal tumors or provide palliative care.

They are effective treatment options for patients who might have difficulty with surgery and for those for whom surgery is not an option due to metastasis.

The procedure is typically performed on an outpatient basis or with overnight observation in the hospital with general anesthesia.

Ablation can be used to treat multiple tumors simultaneously. The procedure can be repeated if new cancer appears.