[A case of curatively resected sigmoid colon cancer after mFOLFOX6 plus panitumumab neoadjuvant chemotherapy].

A 54-year-old man with residual urine, abdominal pain, and a high fever was diagnosed with KRAS wild-type sigmoid colon cancer with urinary bladder invasion. Considering the difficulty of curative resection, we first performed an ileostomy. Remarkable tumor regression was indicated by computed tomography(CT)and colonoscopy after 3 courses of mFOLFOX6 plus panitumumab. A sigmoidectomy and partial cystectomy were performed with a curative intent. Six courses of XELOX adjuvant chemotherapy were administered, and no recurrence has been observed for 9 months. mFOLFOX6 plus panitumumab might be an effective preoperative chemotherapy for patients with locally advanced KRAS wild-type colon cancer.