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
Recurrent polyps are seen in: 
Select and explain. 
A. Antrochoanal polyp, B. Ethmoidal polyp, C. Nasal polyp, D. Hyperophic turbinate
B: Ethmoidal polyp
Answer: B: Ethmoidal polyp 
Explanation: Ethmoidal Polyps They are mostly seen in adults. Etiology--usual cause of ethmoidal polyps is allergy Allergic nasal polyps are rarely, if ever seen in childhood. They are only seen in childhood in association with mucoviscoidosis. Ethmoidal polyps are also associated with: Bronchial asthma Aspirin intolerance Cystic fibrosis Nasal mastocystosis - Syndromes like: Kaageners/Young syndrome/Churg-Strauss syndrome It is generally bilateral Appear as multiple, sessile or pedunculated masses like a bunch of grapes Insensitive to touch and do not bleed on probing. Recurrence is common after removal.