Conversation: The conversation between human and AI assistant.
[|Human|] I saw a Surgeon today regarding a lump in my lower back around my SI region. I have felt a softer mass and also a harder ball like mass near each other. I also have NF 1. The surgeon today only felt the softer mass which I believe to be a Lipoma(he did too) should I be concerned about the harder ball type mass?
[|AI|]  Hi, dairy have gone through your question. I can understand your concern. You have NF1.  You have high chance of neurofibroma.  Lipoma is the benign tumor of fatty tissue & neurofibroma is the benign tumor of neural tissue.  Both the lesions are benign.  No need to worry.  Treatment is excision. Consult your doctor and 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.