Cathy, if you don't trust the ENT don't go back, especially if he has a dismissive attitude. Can you see a head and neck specialist or go back to the cancer center? if you can't, ask for another ENT and tell them it wasn't a good fit and you need to feel comfortable and safe with whoever you go with.
My husband had a FNA and that was how he was finally diagnosed after more than a year and a half of seeing ENT's who told us not to worry "it's not cancer". Anyways, an interventional radiologist did the procedure with a CT scan (I think it was a CT scan)and ultrasound. I was anxious too about seedling but we did it anyway.
From what we've been told, the cancer can reappear anywhere in the oral neck region. Have they checked Chaz's thyroid levels since he was comlaining of sweats? Just a thought
Good luck,
Nancy