Conversation: The conversation between human and AI assistant.
[|Human|] I have a lump in the middle of my chest (male 19) my chest naturally dips inwards since I was born however I have recently noticed a lump that is about the size of a finger tip located in the centre of my chest a little to the right of the centre of my rib cage about 2 cm down from my nipples, it is rather hard sometimes but other times I can push it down, what could it be? Thank you
[|AI|]  Hello! Thank you for the query. This lump can be a rib connection to the sternum. Especially if it is hard like a bone when palpating it. Also, benign soft tissues lesion like lipoma or sebaceous cyst is possible. However, these lesions are usually soft and painless. If this lump concerns you, I suggest you to consult your doctor and have soft tissues' ultrasound done. It will tell what kind of lump it is. Hope this will help. Regards.