Welcome, T

Sorry to hear about your diagnosis, and past medical history. I don't know where I fit in Donfoo's description, maybe the nice one lol? Sometimes a primary is not found, better if it is, but 90 percent are in the Oropharynx, mainly palintine, lingual tonsil, BOT, and reason the tonsil was removed during biopsy, as you probably know, and that area will be treated as the primary. The heard of disappearing primary tumors, which is uncommon, maybe from the body fighing it off, and when it metastasizes to the Lymph nodes, the primary may disappear or just to small to be found.

There's a lot to know, if you care to, some don't. OCF has many pages of info, blogger's various posts with thier experiences, where you can thumb through too.

I see your N staging to be N2b, so there are two or more lymph nodes involved in the ipsilateral neck. I assume the one removed is in level II, most are for oropharynx, but wondering where the other was? Doesn't matter for treatment, they will hit the area anyway, but may direct more gy to that area.

The treatment you are getting is considered the gold standard for SCCHN. IDK if you are going to be treated at John Hopkins or going back home with thier treatment plan, and having it there, but you'll need a multiple sty team of doctors, clinicians for your care. I've been to Winchester, VA, a number of times to visit in-laws, but was never treated there, nice place, but John Hopkins is one of the best you can go to.

Good luck with everything, and if you have any questions, just post.