DH just called from the clinic where he had gone to see about a large lump on the inside of his knee. It had appeared a few months ago, they x-rayed, etc. didn't think it was anything to worry about. It went down for a while then came back this week. Today the nurse took some fluid from it, said it wasn't clear, seemed fatty and that they would schedule surgery to remove it. I know it's probably nothing but has anyone had anything similar?