I have had a lump the size of an orange on my left lower back above my backside. It causes a lot of back pain which also radients down my leg. It has been there for about 3 months. I haven't seen a doctor and just told my husband and mom about it and asked them what they thought. They are upset because they can visually see the lump on my back. I am thinking that it is a muscle that needs to be kinked out, but they seem to think that it is more serious than that. Has anyone had this problem before? I don't want to go to the doctors if it is just a kink or a fatty tissue or something. I hate going to the doctors for this, but if it is something that might need to be looked at than I guess I should go. Any thoughts? Anyone have this or heard of this? Could it be a tumor?