Tumor Ablation - During ablation procedures, interventional radiologists use heat, cold or substances such as alcohol to kill cancer cells by injecting them through catheters directly to the site of the tumor. One relatively new ablation technique called radiofrequency ablation (RFA) has good results at controlling the spread of cancer in some patients. RFA typically treat cancers than cannot be removed by surgeons because of their size/location or because the patient is not healthy enough to have open surgery. RFA is primarily used to treat cancer in the liver, but it is being studied for use in the kidney, adrenal glands, lung, bone and prostate. Although RFA is not a cure, many patients experience improvement and, depending on the type of cancer, may live longer.