Abstract
Although chemotherapy with oral S-1and oxaliplatin (SOX) plus bevacizumab (bev) is safe and feasible for patients with advanced or recurrent colorectal cancer, it is difficult to achieve a complete response (CR) using only chemotherapy. A 67-year-old man underwent endoscopic mucosal resection and additional sigmoidectomy (D2 dissection) for submucosal invasive sigmoid colon cancer. Multiple liver metastases were diagnosed 1.5 years later, and chemotherapy with SOX + bev was initiated. Computed tomography (CT) after the end of the third course revealed reduced liver recurrence. Liver metastases could not be identified using CT after the end of the sixth course. Grade 1peripheral neuropathy was the only side effect of this regimen. Subsequently, the chemotherapy regimen was changed to oral S-1. CT evaluation revealed that there was no recurrence at 6 months after the regimen change.
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