question: I have a large hard lump above my right clavicle. Hard, painless and attached. I found it 1 year ago but it has not changed that I can tell, it s about 1 inch around, I have hashimotos and graves disease as well. Should it be biopsied? I also get headaches and sharp chest pains that feel like a stabbing in my left lung underneath my 3 or 4 rib...