Conversation: The conversation between human and AI assistant.
[|Human|] My 3 year old son has some kind of knot on his chest on the left side, its closer to his sternum and about the same level as his nipple... no bruise or anything, but it s hard and it s been there since Monday.I left it thinking it d go down, like he bumped it or something, but it s not going down but it s not red or anything. He says it doesn t hurt. What could it possibly be?
[|AI|]  Hi, dairy have gone through your question. I can understand your concern.  He may have some soft tissue tumor like lipoma, neurofibroma or dermatofibroma.  Or it may be some other benign lesion.  He should go for biopsy of that lump. 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.