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: ENT
[{'content': "True about juvenile nasopharyngeal angiofibroma -a) Surgery is treatment of choiceb) It is malignant tumourc) ↑Incidence in femalesd) Hormones not used in Rxe) Miller's sign positive \nSelect and explain. \nA. a, B. b, C. ae, D. ad", 'role': 'user'}, {'content': 'Answer: C \nExplanation: JNA is a benign tumor.\nIt occurs almost exclusively in males.\nHormones are used in the treatment\n\n\nPreoperative estrogen to reduce the vascularity\nAs the primary or adjunctive treatment → Flutamide can be used\n\n\nAntral sign or Holman - Miller sign is pathognomic of NFA.\nSurgery is the treatment of choice.', 'role': 'assistant'}]