This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiration, Subject name: Pathology
Hamartomatous lung tissue is? 
Select and explain. 
A. Hypoplasia of lung, B. Congenital cyst, C. Lobar sequestration, D. Congenital cystic adenomatoid malformation
D: Congenital cystic adenomatoid malformation
Answer: D: Congenital cystic adenomatoid malformation 
Explanation: Ans. (d) Congenital cystic adenomatoid malformation(Ref: Robbins 9th/pg 670; 8th/pg 679)Congenital cystic adenomatoid malformation (CCAM): Hamartomatous Q or dysplastic lung tissue, usually confined to one lobe.