How well does chemotherpay oxyplatin and raltitrexed work for met colon cancer ?

Modestly well: Your doctor can address this question better as I do not have details of your tumor sites and bulk of metastases. In general, chemo for metastatic Colon cancer is palliative which means it can be treated and kept under check for months/years but often not curable unless the tumor is amenable to surgical excision following a partial tumor regression with chemotherapy. Good luck.