肝转移在大肠癌的再发和转移形式中是发生率最高的 ,虽然外科切除是最有效的根治疗法 ,但在不能切除时 ,仍然要通过化学疗法进行治疗。尽管化学疗法的疗效正在逐年提高 ,但目前日本能够使用的药物 ,其有效率不过 2 0 %～ 40 %。而肝动脉内注射化学疗法是一种将药物直接注射于肝 Liver metastasis is the most frequently occurring form of recurrence and metastasis of colorectal cancers. Although surgical resection is the most effective radical therapy, it remains to be treated by chemotherapy when unresectable. Although the efficacy of chemotherapy is increasing year by year, the available drugs in Japan are only 20% to 40% effective. Intrahepatic arterial injection chemotherapy is a direct injection of the drug into the liver