Bill

For what it's worth, none of my doctors at the CCC nor my ENT recommend anymore PETscans for me after two rounds of radiation a year apart. They felt the false positive rate, especially for base of tongue cancer, was just too high and they'd have to do an MRI/CT anyway. Let's hope that is the case here for you and this biopsy comes back negative. It's a good sign that the CT and MRI did not show any tumors.
Charm