This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors of Nose and PNS, Subject name: ENT
[{'content': 'Nasopharyngeal angiofibroma is most commonly seen in \nSelect and explain. \nA. Elderly males, B. Females, C. Young males, D. Infants', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Young malesRef: Dhingra\'s ENT 5th ed.l 261"Nasopharyngeal angiofibroma is seen almost exclusively in ADOLESCENT males in the age group of 10-20 years."ABOUT NASOPHARYNGEAL ANGIOFIBROMA* It is a vascular tumor with lots of fibrous tissue without muscular coat. Hence it causes severe bleeding because of inability to contract.* Most common benign tumour of nasopharynx.* Arises from the posterior part of nasal cavity close to superior margin of sphenopalatine foramen.* Frog face deformity- if tumor Extends to orbit and causes proptosis* Antral/Holman-Millar sign -- Anterior bowing of posterior wall of maxillary sinus is pathognomonic.* Investigation of choice is C.E.C.T, scan* Treatment of choice is surgical excision.', 'role': 'assistant'}]