肝癌是世界上第六常见的肿瘤,亦是第三常见导致死亡的肿瘤[1~3]。在中国,肝癌平均发病年龄为55~59岁,而在欧洲及北美,平均年龄为63~65岁。在一些低危人群中,发生肝癌的年龄为75岁或更大[4]。在我国,促使肝癌发生的主要危险因素是乙型肝炎及黄曲霉毒素B1,而在北美、欧洲和日本主要的危险因素则是丙型肝炎及酒精[1]。肝癌的大小、位置、数量以及毗邻血管等限制着手术治疗,因此发展 Liver cancer is the sixth most common tumor in the world and the third most common cause of death [1-3]. In China, the average age of liver cancer is 55 to 59 years old, while in Europe and North America, the average age is 63 to 65 years old. In some low-risk populations, the incidence of HCC is 75 years or more [4]. In our country, the major risk factors contributing to the development of HCC are hepatitis B and aflatoxin B1, while the major risk factors in North America, Europe and Japan are hepatitis C and alcohol [1]. The size, location, quantity, and adjacent blood vessels of liver cancer limit the surgical treatment, so the development