Interesting. Maybe some things changed since I was last tested by FNAB 4 years ago, but I've been to several top cancer centers, and they all did FNAB, had a total of 8, which are said to be accurate in the high 90% range for nodal disease, and just as reliable as a surgical biopsy, but mine were never done sooner than 3 months after treatment, if that matters.

You can probably have 5 different consultations, and get 5 different opinions, but having different options are always good, and better than none, but still difficult to choose, although I would favor the top cancer center, and hopefully it's in ENT too. I can understand not having a CT, as they may not be able to differentiate from inflammation as a PET/CT scan can, which uses a nuclear glucose tracer and goes by SUV highlight, which I prefer, and can be 90% accurate by week 8 from one reading, and more as time goes by. Anything less than 6 weeks is not as reliable. PET scans can also highlight tumors that are as small as 5mm, and had one that was 3mm, and were able to US FNAB, while a CT or MRI it usually has to be around 1cm to be found.

All my post treatment scans were by PET//CT, except once my surgeon wanted a CT, without contrast due to kidneys, but my radiation oncologist insisted on a PET/CT scan.

Here is an article management of HPV nodes, but it's from 2014.

Management of the lymph node-positi...mavirus-associated oropharyngeal cancer.

Good luck with everything!