<s>[INST] My husband has stage four colon cancer.We have been through olio stories and reversals, liver surgery removing small tumors, radio frequency ablation and the new procedure NanoKnife. His CEA count is rising again and we want to know what the newest chemo or other procedures are to research. [/INST] Drugslike bevasizumab and cetuximab along with chemotherapy can be given. Consult a good medical oncologist. </s>