This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
Diagnosis in a ten year old boy with recurrent epistaxis and a unilateral nasal mass is 
Select and explain. 
A. Antrochoanal polyp, B. Hemangioma, C. Angiofibroma, D. Rhinolith
C: Angiofibroma
Answer: C: Angiofibroma 
Explanation: Nasopharyngeal fibroma/Juvenile nasopharyngeal angiofibroma is a major cause for recurrent epistaxis in adolescent males. It is testosterone dependent. Benign tumour but locally invasive Ref - PL DHINGRA diseases of ear nose and throat, 6th edition