Conversation: The conversation between human and AI assistant.
[|Human|] I am an 81 year old male with a hard lump in the middle of my lower back three inches in length and about 1/4 inch high in the middle of the semicircle type of lump.  I have a history of lymphoma and urological as well as cardiological health issues - should I worry about this?
[|AI|]  Hi, dairy have gone through your question. I can understand your concern. You may have some soft tissue tumor like lipoma or neurofibroma or dermatofibroma.  However, you have history of lymphoma.  So there can be chance of lymphoma. Best thing to do is biopsy.  You should go for fine needle aspiration cytology or biopsy. It will give you exact diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health.