뼈전이에 대한 방사선 치료 이후 압스코팔 효과로 폐전이 호전을 보인 간세포암 1예

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. (J Liver Cancer 2017;17:168-173)