<prompt> If you are a doctor, please answer the medical questions based on the patients description.hello. I have an odd shaped lump or growth in my bottom right ribcage. It feels as if it is growing directly on it. It also feels like a deformed rib sticking out. It does not really hurt when I touch it, but it gives me an unusual sensation when I do touch it. It is under the skin. I can feel it whenever I move a certain way.  <response>: Hi, There are a couple of things that come to mind. One is called a lipoma and that may be the most likely type of lump or nodule. Another thing that comes to mind is something called a neuroma. The first item is a tumorous growth of fat tissue entirely benign and noncancerous and the 2nd is a tumorous growth of nerve tissue again benign. Lipomas are never painful unless they are overriding a sensitive structure such as a nerve. Neuromas are often painful when squeezed or compressed but if you leave them alone theyll do the same. In either case, it wouldnt be a bad idea to have a doctor take a look and a feel just to make sure all is in order. Hope I have answered your query. Let me know if I can assist you further. 