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: Pathology
[{'content': 'Presence of Birbeck granules in histopathological examination suggests: \nSelect and explain. \nA. Plasmacytoma., B. Burkett lymphoma., C. Langerhan cells histiocytosis., D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The old term histiocytosis X is replaced by new term called\xa0Langerhans cell histiocytois (LCH). The presence of birbeck granules is characteristic finding in LCH.', 'role': 'assistant'}]