Conversation: The conversation between human and AI assistant.
[|Human|] My friend has a lump in her thigh on the backside. It is not on the surface. It is at least the size of a walnut. She discovered this when she lost a significant amount of weight and was able to feel it more easily. She says it does not hurt. Any ideas?
[|AI|]  Hi.noted history of non-painful lump on the patients posterior thigh. It may be a case of lipoma (fatty deposit), fibrous (fibrous tissue formation) or a cystic formation. Other lesion types such as malignancy must also be ruled-out. It is best if you bring your friend to a doctor, preferably a general surgeon, especially if the lesion is bothering her. Diagnostics and management (medical and/or surgical) will be directed accordingly. Definitive management is surgical excision of the lesion with proper antibiotic regimen and daily wound care thereafter. Hope this helps. Good day!!~ Chat Doctor.