This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
[{'content': 'Which of the following is not true for juvenile nasopharyngeal angiofibroma \nSelect and explain. \nA. Biopsy for diagnosis, B. Second decade, C. Surgical excision, D. Benign tumor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: NASOPHARYNGEAL FIBROMA (JUVENILE NASOPHARYNGEAL ANGIOFIBROMA) PATHOLOGY :- Angiofibroma, as the name implies, is made up of vascular and fibrous tissues: the ratio of the two components may vary. Mostly, the vessels are just endothelium-lined spaces with no elastic or muscle coat. This accounts for the severe bleeding as the vessels lose the ability to contract; also the bleeding cannot be controlled by application of adrenaline. DIAGNOSIS:- It is mostly based on clinical picture. Biopsy of the tumour is attended with profuse bleeding and is, therefore, avoided. Ref:- Dhingra; pg num:-246,247', 'role': 'assistant'}]