This trial is a two-arm, open labelled, prospective, randomized phase II studies. The postoperative stage of eligible patients was stage IIIB or stage IIIC. These high risk patients will be randomly assigned, in a 1:1 ratio, to receive either mFOLFOXIRI or mFOLFOX6/CapeOx for 6 months as adjuvant chemotherapy.
