[Three Cases of Unresectable Colorectal Cancer Curatively Resected after Effective Chemotherapy].

Case 1: A60-year-old man underwent resection of a brain tumor, which was pathologically diagnosed as adenocarcinoma. As he was diagnosed with unresectable rectal cancer due to pulmonary metastasis, we performed abdominoperineal resection after chemotherapy. Since pulmonary metastasis and local recurrence were detected 1 year after the surgery, he was administered chemotherapy. He died 37 months after the surgery. Case 2: A6 4-year-old man was diagnosed with unresectable rectal cancer due to pulmonary and hepatic metastases, resulting in an examination for melena. We performed laparoscopic low anterior resection and hepatic partial resection after chemotherapy. No relapse has occurred 1 year after the surgery. Case 3: A39 -year-old man was examined for abdominal pain and distension and was diagnosed with unresectable rectal cancer due to invasion of the left ureter and multiple hepatic metastases. We performed anterior resection, hepatic partial resection, and RFAafter chemotherapy. He has remained in relapse-free survival for 15 months after the surgery. These results suggest that curative resection after chemotherapy improves the prognosis of unresectable colorectal cancer.