Hey! I wanted to put my 2 cents worth in here. I went through the same thing in 2000. Did the radioiodine uptake scan, needle biopsy and both came back inconclusive. They did surgery, removed 1/2 my thryoid & sent it off to be tested while I was still on the operating table. It was determined that it was cancer and they went ahead and removed the whole darn thyroid. It was papillary cancer, Stage I. I went ahead and did the radiation treatment (I might reconsider that today as there is some research possibly linking radiation treatment with breast cancer). I am cancer-free. I take Synthroid every day...well usually (when I remember). I see my endocrinologist regularly, as they like to monitor those meds often.
All is good. I didn't understand what my doctor was saying to me when he said, "Papillary cancer is the best cancer to have". I was devastated, but now, after being around others with much worse cancers, I understand what he meant. I am lucky. I cheated death, in a sense, and can live my life to it's fullest now.
If you have any questions, feel free to contact me. I was terrified to have them cut on my neck, but the anesthesiologist fixed me a great cocktail to make me forget all about the surgeon slitting my throat! It was the easiest surgery I've ever gone through. Don't worry too much!