大肠癌在西方国家占肿瘤死亡的第2位,发病率为50/10万。我国大肠癌发病率约为20.6/10万,占肿瘤死亡的第5位。肝脏是大肠癌最常见的转移部位,有60%~71%的大肠癌最终发生肝转移,而在确诊大肠癌时有10%~20%的病人发生了肝转移[1]。大肠癌病人出现肝转移即划归Dukes D期,未经治疗者 Colorectal cancer in Western countries accounted for the second death of the tumor, the incidence was 50 / 100,000. The incidence of colorectal cancer in China is about 20.6 / 100,000, accounting for the fifth death of the tumor. Liver is the most common metastatic site of colorectal cancer, with liver metastases occurring in 60% to 71% of colorectal cancers and liver metastases in 10% to 20% of patients diagnosed with colorectal cancer [1]. Liver metastasis of patients with colorectal cancer is assigned to Dukes D period, untreated