Hello Amy always a pleasure, I wish your husband john well. I could not get in touch with my ob-gyn to awnser this so I will take a crack at this myself. Induction therapy is usually the primary treatment where they throw the heavy artilery at you and try to erradicate as many cancer cells as possible.n While many head and neck cancer patients will have ADJUVANT CHEMO which is in addition to another primary treatment like radiation and/or surgery.