Advanced hepatocellular carcinoma has a poor prognosis, especially in the cases with portal vein or IVC tumor
thrombi. In such cases, surgical resection could not be a curative treatment option and transcatheter arterial
chemoembolization (TACE) alone is usually ineffective. Recently, three-dimensional conformal radiation therapy
(3D-CRT) has been developed to better conform the radiation dose to the tumor volume in order to reach the goal
of eradicating local disease without injuring normal tissue. Combination therapy with TACE and 3D-CRT could
be considered as a treatment option for advanced HCC with PV or IVC tumor thrombi. We report here two cases
with advanced HCC showing response to combination therapy with repeated TACE and 3D-CRT.