This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammation & Repair, Subject name: Pathology
[{'content': '5 yr old male had fever and cervical lymphadenopathy. Histopathologic examination of cervical lymph nodes shows: \nSelect and explain. \nA. Caseating granuloma, B. Non caseating granuloma, C. Stellate granuloma, D. Fat necrosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Caseating granulomaCaseating granuloma typical granuloma resulting from infection with Mycobacterium tuberculosis showing central area of caseous necrosis, activated epithelioid macrophages, giant cells, and a peripheral accumulation of lymphocytes.. We can also see langhans giant cell at 3, 0 clock position in image', 'role': 'assistant'}]