Conversation: The conversation between human and AI assistant.
[|Human|] HI, About a year ago I noticed a knot on my upper thigh - it was fairly hard but not painful. Since then, I have developed a large bruise and lumpy areas on my thigh. The bruised area is warm to the touch. Tonight I noticed another knot on the inside of my upper arm. I am a 53 yr old female with no major health issues other than hypothyroidism (surgicially removed malignant thryoid tumor) when I was 17 yrs old and a positive result for lyme disease 4 years ago which was treated with antibiotics.
[|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 some other lesion.  You should go for either fine needle aspiration cytology or biopsy.  Search for the exact cause.  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.