This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'Which feature would most likely be found in a patient with lepromatous leprosy? \nSelect and explain. \nA. No bacteremia, B. Macrophages with a foamy appearance in the dermis, C. A positive lepromin reaction, D. A high cell-mediated response against Mycobacterium leprae', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The disease of leprosy is divided into two basic types: lepromatous and tuberculoid. The lepromatous form is an aggressive disease, whereas the tuberculoid form tends to be self-limiting. Individuals with lepromatous leprosy have an inflammatory skin infiltrate, which consists largely of macrophages that have a characteris\xadtic vacuolated or "foamy" appearance (caused by the accumulation of lipids within phagocytes) and intra\xadcellular acid-fast bacilli. In the lepromatous form, pres\xadence of organisms indicates impaired cellular immu\xadnity, unlike the tuberculoid type, which can effectively kill the bacteria.', 'role': 'assistant'}]