This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disease of Infancy & Childhood, Subject name: Pathology
Primary structural defect of an organ is termed - 
Select and explain. 
A. Malformation, B. Disruption, C. Deformation, D. Association
A: Malformation
Answer: A: Malformation 
Explanation: Ans. (a) Malformation(Ref: Robbins 9th/pg 452)Malformation refers to primary structural defect of an organ due to intrinsically abnormal developmental process (multifactorial); Eg Anencephaly, Congenital heart defects