Conversation: The conversation between human and AI assistant.
[|Human|] I have a hard knot on the back of my neck. its been there about 2 years and has gotten bigger. I dont know if its related, but i also have joint pain and keep a low grade fever. I had a soft tissue MRI and it didnt show anything. Any idea what this could be? thank you.
[|AI|]  Hi, dairy have gone through your question. I can understand your concern. You may have enlarged lymph node due to reactive hyperplasia, tuberculosis, lymphoma or metastatic carcinoma.  Or you may have some tissue tumor like lipoma or neurofibroma. You should go for fine needle aspiration cytology or biopsy of that lump.  It will give you exact diagnosis.  Then you should take treatment according to diagnosis. 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.