Conversation: The conversation between human and AI assistant.
[|Human|] the pain pushes up making breathing hard at times, there is a knot or bump on the left side where all the pain is, it radiates to the bacxk and am almost totally debillitated by this. am in my mid 50s thin male, smoker.  Have had back surgery for broken back several yrs ago  Had a heart attack a yr ago from a blood clot in one of the back arteries in my heart  a metal stent was put in and have had pain ever since on the left.
[|AI|]  Thanks for your question on Chat Doctor. I can understand your concern. You already had heart attack, undergone angioplasty and still smoking. So we should first rule out cardiac cause for your left sided chest pain and breathing difficulty. So consult cardiologist and get done ECG, 2d echo and coronary angiography. You may need repeat angioplasty or bypass surgery if there is blockage in coronary arteries. In any case, you can, should quit smoking as soon as possible. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.