This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Most common nasal mass: 
Select and explain. 
A. Polyp, B. Papilloma, C. Angiofibroma, D. None
A: Polyp
Answer: A: Polyp 
Explanation: Benign conditions show a peak during second to fouh decade of life, while malignancy is generally observed only after the 4th decade. Polyps are the most common benign lesion, while squamous cell carcinoma is the most common malignant tumour of the sinonasal tract. Nasal obstruction is the most common symptom.