[A Case of Unresectable Recurrent Colorectal Cancer with Regorafenib Treatment and Long-Term Survival].

This paper reports a case in which the patient has survived for 5 years and 6 months after recurrence of colorectal cancer by chemotherapy, and especially in regorafenib as fourth-line therapy has obtained stable disease(SD)for 2 years and 6 months. A man in his 70s underwent left hemicolectomy in the diagnosis of descending colon cancer. Four years and 4 months after the operation, abdominal CT revealed paraaortic lymph node metastasis. When SOX plus bevacizumab was performed as first-line therapy, partial response(PR)was obtained, and PR was maintained for a long time. After progressive disease(PD), IRIS was performed as second-line therapy, but the effect was not obtained. Panitumumab was started as third-line therapy, and PR was temporarily recognized, but since it became PD again, regorafenib was introduced as fourth- line therapy. After regorafenib administration, reduction of paraaortic lymph nodes and lowering of CEA are recognized, and long SD can be maintained. This case can be said to be 1 case in which the usefulness of regorafenib was shown as a salvage- line for unresectable colorectal cancer.