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': 'A 9 year boy presents with nasal obstruction, proptosis, recurrent epistaxis from 3-4 years. Management includes -a) Routine radiological investigationsb) Embolisation alone should be donec) Surgery is treatment of choiced) Embolisation followed by surgerye) Conservative management is sufficient \nSelect and explain. \nA. b, B. c, C. ac, D. ad', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Nasal obstruction, proptosis and recurrent epistaxis from 3-4 years in a 9 years boy suggest the diagnosis of nasopharyngeal angiofibroma.\nRoutine radiological investigations e.g., soft tissue lateral film of nasopharynx; X-rays of paranasal sinus and base of skull; and CT scan (investigation of choice) should be done.\nSurgery is the treatment of choice. Preoperative embolization and cryotherapy reduce the vascularity and therefore blood loss at surgery.', 'role': 'assistant'}]