The Novel Approach of Multiple Colon Cancer Liver Metastases Treatment.

Multiple bilobar liver metastases (MBLM) are the main cause of low resectability in the colon cancer liver metastases. The authors experienced one case of initially non-resectable colon cancer liver metastases. He was curatively and safely treated with a two-stage hepatectomy using the new method of future remnant liver volume growing. A 54-year-old man was referred to our department with the sigmoid colon cancer combined with MBLM, which were checked in two small metastatic lesions in the left lobe and five large sized lesions in the right lobe in the computed tomogram (CT). At first, a laparoscopy-assisted anterior resection was performed. We performed the stage hepatectomy 3 weeks after the colon resection. Intra-operative Ultrasonogram (US) found 9 small superficial metastatic lesions in the left lobe. All that lesions were completely removed by non-anatomical wedge resection. An occlusion balloon catheter was placed in the right portal vein through a small branch of the inferior mesenteric vein at that time. The future remnant liver volume was sufficiently increased 3 weeks after the hepatectomy. A right hepatectomy was safely performed 22 days after the hepatectomy. The patient had received a regional chemotherapy (interleukin2 based immuno-chemotherapy through hepatic artery) for 6 months, then has been receiving a systemic chemotherapy (biweekly Oxaliplatin, leucovorin, plus 5-fluorouracil) without any recurrence evidence.