This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial Infection of Skin, Subject name: Skin
[{'content': 'A young male presented with Hypo anesthetic patch on right forearm. On examination a thickened nerve was palpable. Histopathology shows the following: \nSelect and explain. \nA. TT Leprosy, B. LL Leprosy, C. Lymphoma, D. Histiocytosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. TT LeprosyTuberculoid leprosy (TT):a. One or few, asymmetrically located lesionsb. Well defined, hypo-pigmented, anesthetic macules or plaques, often with active border.c. The lesions show hair loss and impairment of sweatingd. A superficial feeder nerve or single regional nerve is often thickened and may even be nodular.Histopathology:Hard tubercles eroding into epidermis; no clear zoneLepromatous leprosy (LL):A systemic disease characterized by extensive cutaneous, neural and systemic involvementHistopathology:a. Collection of foamy macrophages in dermis separated from epidermis by a clear zoneb. Masses of acid-fast bacilli (globi) can be seen in some of the foamy histiocytes', 'role': 'assistant'}]