Conversation: The conversation between human and AI assistant.
[|Human|] I have recently lost nearly four stone in weight and have just noticed a small lump about the size of a large grape in the centre of my chest where the lower part of my rib cage meets. I didnt notice it before and I have no pain from it but it does worry me. Is this normal ?
[|AI|]  Hi. The best advice I can give you is to have a consultation w a physician for a complete examination, and evaluation of that mass through imaging like x-ray or a ct-scan and the possibility of a tissue diagnosis through biopsy. It could be normal if it's just a bone protrusion, it could also be a benign cyst, but my concern is that you have accompanying weight loss, and it might be something else. So the safest and definitive way to know is to have a consult. Hope this helps.  Good day!~ Chat Doctor.