It is in plain english, but your RO only showed you one type treatment, not all of them as reccomemned by NCCN. NCCN guidelines indicate 3 modes of treatment for T2 oropharyngeal cancer 1. Radiation 2. Resection of primary with ipsilateral or bilateral neck dissection 3. Radiation with systemic treatment (chemo/targeted therapy), It's just a guideline, and not set in stone, and other matters are taken into account. If adverse effects are still there they move on to the next step. Your next step after radiation, if it fails, is really salvage surgery, not chemo, which doesn't kill this cancer on its own, and would be palliatve only, but chemo can be given with radiation after salvage surgery to make it work better, get any distant, microscopic cancer.

Good luck.