I am sorry that your relative has hepatitis B and a liver tumour. Radio Frequency Ablation of Tumour is indicated when there is a solitary tumour in the liver that cannot be removed surgically. It is indicated in a single tumour not greater than 3 to 4 cm in size, situated deep within the liver, when resection cannot be performed. It is not indicated when the tumour is located on the surface as bleeding from the tumour may occur. It is also contraindicated in the presence of ascites. However, there are alternative methods of treatment such as arterial chemo-embolisation. However, surgery remains the primary option if not contra indicated. I do not know of any place in Calcutta or nearby where radio frequency ablation can be done. However, this is being performed at AIIMS in New Delhi where you may take your relative.