Liver cancer or hepatocarcinoma is either primary or metastatic in origin. Those originating in hepatic cells or intrahepatic duct are recognized as primary hepatocarcinoma; while those originating in other regions and moving to the liver are known as metastatic hepatocarcinoma. Generally speaking, liver cancer refers to primary hepatocarcinoma. It is chiefly manifested as pain in the right espigastrium, emaciation, anorexia, lassitude and progressive hepatomegaly. It is one of the most common malignant tumors. According to epidemiological data, its morbidity and mortality in China come in third, next to those of stomach and lung cancer.