I had thyroid nodules in the 70's but blood tests over the years never showed anything untoward. As I've got older I've developed a goitre which is only visible from certain angles but I know it's there because it's right across my windpipe though I must say it doesn't bother me because I can swallow/eat alright but still after all these years nothing shows up when the blood test ( annual ) is done.THF test inc.
I did have a neck scan, fine needle biopsy and also a camera to the affected part and fortunately it's not diseased, but a surgeon wanted to do a partial thyroidectomy and I refused.
Another doctor had said " if it ain't broke don't fix it ", to leave well alone for so long as it isn't diseased or causing problems leave it be.