I'm sorry for the bad news, but welcome. I also had base of tongue involvement, but primary was in the tonsil,
HPV status unknown, in same area, and where 90 percent of
HPV SCCHN is involved, tonsil, base of tongue. The good news is
HPV had shown to respond better to Radiation, and even more with chemo, and better prognosis, but is no guarantee of anything. It is tough treatment, since treatment involves vital areas such as, speech, chewing, swallowing, talking, breathing, appearance, but many do it successfully.
Were any cervical lymph nodes involved, do you know the clinical TNM staging...Tumor, Nodes, Metastases, histology of the biopsy.
The is so much to understand. I suggest you become familiar with the many links on OCF to be more knowledgeable with this type disease, and see the many other members, who may post here with thier suggestions.
If you have any questions, just post them. Good luck with everything.
When I responded, there were no responses. By the time I finished, and posted there were two lol. Sorry if some is repeated.