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
27. Topical steriods are not recommended post surgery for: 
Select and explain. 
A. allergic fungal sinusitis, B. Chronic rhinosinusitis, C. Antrochoanal polyp, D. Ethmoidal polyp
C: Antrochoanal polyp
Answer: C: Antrochoanal polyp 
Explanation: For antrochoanal polyps cause is infection and not the allergy. antrochoanal polyps are single,unilateral and rarely recur. Topical steriods are rarely recommend ref Scott Brown 7/e,p 1553