Agreed with Paul. One thing my multiple oncologist consults agreed on was to try to limit the treatment to 2 out of 3 modalities (neck dissection/surgery, radiation, chemo). There are nccn treatment guidelines for head amd neck cancers which show the standard treatment protocols based on clinical staging. I'd post the link but copy paste on my phone doesnt work on this forum for me.

My docs decided against recommending a neck dissection/surgery because they thought it most likely that there would not be sufficient margins on the primary and I would still need chemo and radiation even with surgery.