Conversation: The conversation between human and AI assistant.
[|Human|] Have a hard mass in knuckle part of hand. Very painful and throbs, bringing tears to my eyes at times.  Had xray and MRI. Shows bone erosion. Could missing bone be bone cancer? I am 41 with no family history of bone cancer. Dr. Has not seen this before and doesnt know what it is.
[|AI|]  Hi, Thanks for writing in. It is possible that you might have a bone cyst or a benign swelling which is causing your symptoms. The pain might be arising from stimulation of the nerves in the area. If it has happened slowly over more than 6 months to a year then it is a benign swelling. If it has increased in size within 3 months then a suspicion of cancer or an acute inflammation is to be thought of.However, the pictures of the bone erosion are to be evaluated in detail to know about any pattern of destruction on the lines of a cancer. Please upload your images and report if possible, and we can discuss the bone changes in your knuckle accurately. A FNAC from the swelling might help and this is a simple investigation by which few cells from the problem area are looked in to using a microscope. Please do not worry.