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
Antral sign is seen in 
Select and explain. 
A. Juvenile angiofibroma, B. Otosclerosis, C. CSOM, D. Sinusitis
A: Juvenile angiofibroma
Answer: A: Juvenile angiofibroma 
Explanation: Anterior bowing of the posterior wall of maxillary sinus often called antral sign or Holman-Miller sign, which is pathognomic of angiofibroma. (Ref: Diseases of ear, nose and throat, PL Dhingra, 7th edition, page 281)