 I am Dr. Ravichan Siddhachari. I am a consultant hepatobiliary surgeon and chief liver transplant surgeon at Manipal Hospital's Old Airport Road, Bangalore. RFA or Radio Frequency Ablation means heating up the tumour and the heating up the tumour kills the cancer cells. This is done by radio waves. The method is by inserting a needle through your skin into the tumour under ultrasound or CT guided. You can heat up the cancer cells and kill the cancer cells. The other way of doing it is by opening the abdomen and directly insert the needles into the liver. You can see the tumour burning which can also be seen later on on imaging. RFA is used for patients who are not suitable for surgery and RFA can also be used to downsize the tumour. Just like the Taze, that depends on what kind of tumours they have and also the background disease.