Conversation: The conversation between human and AI assistant.
[|Human|] I have a lump at the bottom of my sternum. It is exactly in the middle. It moves in and out, but not in any other direction. It is sometimes painful and I have had it for about six months. Any idea what this is and if I should see a physician about it?
[|AI|]  Welcome to Chat Doctor .1. I will help you what is there below sternum. There is duodenum, pancreas, liver.2. Any any lesion or mass arising from these organs will give specific symptoms.3. Coming to sternum itself generally not give any lesions, it's very rare.4. The only investigation which will help to clear doubt would be CT scan.5. It better let your doctor examine and decide weather required or not.6. Hope it helps you. Anything to ask ? Do not hesitate. Thank you.