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
Multiple nasal polyp in children should guide the clinician to search for undermying: 
Select and explain. 
A. Mucoviscidosis, B. Celiac disease, C. Hirschsprung's disease, D. Sturge weber syndrome
A: Mucoviscidosis
Answer: A: Mucoviscidosis 
Explanation: Multiple nasal polyp in children nay be associated with mucoviscidosis. Ref.Dhingra 6/e p 175