I have had a hard lump on the right side of my head for a couple years now. When I first noticed it, my Family Dr. told me as long as I could move the lump under the skin it was ok.
It has since maybe tripled in size, like the size of my thumbprint,but I can still move it around. I've found another on the center back of my head, but it is very small.
What is this and could it be serious? I want to remove it if possible, I don't want it to get any bigger