A Case of Abscopal Effect on Pulmonary Metastasis after Palliative Radiotherapy on Bone Metastasis of Hepatocellular Carcinoma

ABSTRACT

The abscopal effect is a rare phenomenon that characterized by tumor regression of untreated metastatic lesions after a local radiotherapy. The mechanisms of abscopal effect are speculated to be associated with cytokine release and host immune system. In this case, we report a case of abscopal effect in a 64-year-old male with hepatocellular carcinoma with lung and bone metastasis, who had complete response in the lung after receiving radiation to the metastatic bone lesions.