question: For over a year I have had a grapefruit sized soft lump on my left lower leg; to the right of my tibia. The ultrasound showed nothing and 2 doctors were clueless. It is not going away; what could it be and should I be worried? It doesn't hurt but if I wrap it, the swelling (if that is what it is) spreads around to other spots in my leg. A fatty tissue tumor sort of thing? I am 60, 5'2", 140 lbs., excellent health albeit lazy. Weird!