<s>[INST] Hi, I have an oval shaped lump on the left side just under my rib cage in the middle front. Depending on my sitting or bending forward position this lump pops out and is very painful. I ve been told that it is not a hernia. Any suggestions/possible explanation [/INST] Hi, dairy have gone through your question. I can understand your concern. You may have some soft tissue tumor like lipoma or neurofibroma or dermatofibroma. Or you may have some other cyst or tumor.  You should go for fine needle aspiration cytology or biopsy of that lump and ultrasound study.  It will give you exact diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>