1982年7月) trisegmentectomy is poorer than that of hepatic resection of less than 3 segments. The postoperative cumulative survival rate of hepatectomy less than trisegmentectomy for the primary liver cancer of the adult at 1, 3 and 5 years after operation is 76%, 55%, and 37% respectively. On the other hand that of trisegmentectomy for the same disease is 54%, 28% and 2O9o respectively. That means the hepatic trisegmentectomy for far advanced liver cancer is better palliation than other

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... ive treatments such as chemotherapy or ligation of the hepatic artery. In recent year the result better than expected of the hepatic arterial embolization as therapy for the liver cancer has been reported. In our department hepatic arterial embolization is performed prior to hepatectomy. It is observed in the operation specimen that the tumor contracted and almost whole tumor cells are necrotized. Some of recurrences of liver cancer in the remnant liver and/or the lung after hepatectomy suggest to be caused by manipulation in the hepatectomy. Preoperative hepatic embolization is expected to prevent metastasis ocurred during hepatectomy and which will improve the survival rate after the hepatic trisegmentectomy.