 [ Symptoms ] i still have a softball sized lump on my thigh and buttocks from hitting a tree while skiing last year what can i do  my doctor said it was fat necrosis and should be gone in a year but it is the same should i take more action [ Disease ] it means that you may have a lump there but it is not medically significant if you are concerned about its appearance you may want to talk to your dermatologist or a plastic surgeon about having it removed