This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New Born Infants, Subject name: Pediatrics
Lung is characteristically involved in: 
Select and explain. 
A. Churg-Strauss syndrome, B. HSP, C. PAN, D. ITP
A: Churg-Strauss syndrome
Answer: A: Churg-Strauss syndrome 
Explanation: a. Churg-Strauss syndrome(Ref: Nelson's 20/e p 1221-1223, Ghai 8/e p 631-635)Churg Strauss syndrome: It is a small vessel necrotizing granulomatous vasculitis associated with a history of refractory asthma & peripheral eosinophilia.