[A Case of Unresectable Liver Metastasis from Rectal Cancer Treated with Conversion Therapy].

We reported a case of rectal cancer with unresectable liver metastases treated with resection of the primary lesion followed by systemic chemotherapy with curative resection. A woman in her 40s was diagnosed with rectal RS carcinoma and unresectable liver metastasis, mFOLFOX6 plus panitumumab therapy was initiated after laparoscopic high anterior resection of the rectal lesion. After 5 courses of chemotherapy, significant shrinkage of the liver metastatic lesion and increase of the remnant liver volume were observed. Percutaneous transhepatic portal vein embolization( PTPE) was performed with the aim of further preserving remnant liver volume. Since the hepatic reserve was sufficient, the treatment strategy was to perform radical hepatectomy. Extended right hepatic lobectomy, S4 partial resection, and cholecystectomy were performed. The patient didn't relapse at 11 months after hepatectomy.