[A case report of metastatic liver tumor from rectosigmoid colon cancer demonstrating a pathological complete response with FOLFOX and FOLFIRI treatment].

We report a case of multiple liver metastases of rectsigmoid colon cancer treated with systemic chemotherapy and hepatectomy. A 40s woman had undergone anterior resection of rectum for rectsigmoid colon cancer with multiple liver metastases. Then FOLFOX4 regimen was performed fifteen times, and FOLFIRI regimen was performed eleven times. After chemotherapy was enforced, an abdominal CT revealed that liver metastases were reduced in size (effect judgment of partial response). Hepatic resection of the right lobe and partial of S2 segment were performed. Pathological findings of the resected liver revealed no residual cancer cells, indicating that the histological effect of chemotherapy was complete response (CR).