Recurrent hepatocellular carcinoma (HCC) with a tumor thrombus (TT) extending into the inferior vena cava (IVC)/right atrium (RA) is generally regarded as a terminal-stage condition and there is no worldwide consensus on the proper management of this situation. | Hypofractionated radiotherapy as a salvage treatment for recurrent hepatocellular carcinoma with inferior vena cava right atrium tumor thrombus A multi-center analysis