Conversation: The conversation between human and AI assistant.
[|Human|] I recently went to the chiropractor who took xrays of my chest and there were dark black circles on the left side of my xray. I have had burning sensations on the left side recently and was too afraid to ask my chiropractor what the dark circles meant. They were really big so I hoped they were organs. What is on the left side of the lower chest cavity that would show up?
[|AI|]  Hi, Thanks for writing to Chat Doctor, I am Chat Doctor. Darkness in X-ray mean air.these dark circles due to multiple causes like ballad, dilatation of bronchioles like in obstructive lung disease etc... if u were my patient I would like to run some tests like PFTS, CT, etc so that I can find out the cause n then treat it accordingly . I hope this answered your question, if you have more feel free to ask. Regards.