[Long-Term Effectiveness of Chemotherapy Containing mFOLFOX6 plus Panitumumab and 5-FU/l-LV plus Panitumumab after Primary Tumor Resection in a Case of Ascending Colon Carcinoma and Multiple Hepatic Metastases].

The patient was a 79-year-old man. He had ascending colon carcinoma and multiple hepatic metastases, and right hemicolectomy( D2)was performed in June 2012(SE, N1, P0, M1[H3], Stage Ⅳ). After surgery, 8 courses of mFOLFOX6 plus panitumumab biweekly, then, 5-FU/l-LV biweekly and panitumumab every 4 weeks were administered because he had wild- type KRAS. Before chemotherapy, his serum CEA level was 122 ng/mL, but the value decreased rapidly to a normal level after 7months. The hepatic metastases also decreased, and the lesion was only slightly observed on CT after 7months. Five years after the surgery, images and his CEA level are both normal, and the effectiveness is maintained. Even for right colon cancer, anti-EGFR antibodies might be effective if RAS is wild-type.