Conversation: The conversation between human and AI assistant.
[|Human|] hi! im 52 years old male and a smoker for 30 years, it seems like my collar bone has some sort of hard lump, like the bone poked out but no pain, is this might be related to lung cancer or c.a.d (coronary artery disease). please help, thank you so much
[|AI|]  Welcome to Chat Doctor .1. Lung cancer is one of the cause for the mass at the collar bone.2. Or any bony lesion arising from the collar bone itself.3. An x-ray chest / picogram initially to evaluate the lesion.4.depending on the involvement CT could be suggested.5. Yes even arteries cause lump, but they are not so hard. (an ultrasound will help in case of soft masses)6. However, get an appointment and see your doctor and do needful investigations. Anything to ask ? Do not hesitate. Thank you.