Well I don't know if I could call it a "lump" or "swelling" but It's on one of my top right ribs....and none of my other ribs feel this way...it kind of like sticks out or curves higher than the other ribs, like shaped differently? I'm not quite sure how to explain it. No pain, no other symptoms, I don't feel any pain. I'm just so afraid it's an early sign of bone cancer or a sarcoma....I just noticed it...I am not sure if it's been like that my whole life or if it just came up? I've never broken it and I don't have scoliosis..