[A Case of Metastatic Lung Cancer from Colon Cancer with a Long Partial Response with Regorafenib Treatment]

A 66-year-old woman underwent sigmoidectomy for colon cancer. The final diagnosis was early cancer of pT2 pN0 and M0 (fStage I ). A chest CT revealed lung metastasis and lymph node metastasis 6 years after surgery. The patient was treated sequentially with FOLFOX, FOLFIRI, and XELOX regimens. Since these regimens resulted in progressive disease, regorafenib was started as the fourth regimen. After 8 courses, she was evaluated as having a partial response. Her partial response has continued for 18 months of regorafenib treatment.