This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ENT Q Bank, Subject name: ENT
A 16 years old girl presented with history of nasal obstruction for last 2 months. A CT Scan was done and following findings are seen. What is the most likely diagnosis? 
Select and explain. 
A. Juvenile Nasopharyngeal Angiofibroma, B. Antrochoanal polyp, C. Nasopharyngeal carcinoma, D. Adenoid Hyperophy
B: Antrochoanal polyp
Answer: B: Antrochoanal polyp 
Explanation: CT Scan picture shows Crescent sign or Dodd's Sign seen in Antrochoanal Polyp Adenoid hyperophy: Dodd's Sign is negative JNAF- Epistaxis in adolescent males NPC- Old age, presents generally with Neck node metastasis