This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pediatrics
In Potters syndrome - primary pathology is: 
Select and explain. 
A. Oligohydramnios, B. Renal agenesis, C. Dysmorphism, D. Limb defects
B: Renal agenesis
Answer: B: Renal agenesis 
Explanation: b. Renal agenesis(Ref: Nelson 20/e 2513)Components of oligohydramnios complex (Potter syndrome), including low-set ears, micrognathia, flattened nose, limb positioning defects, intrauterine growth restriction & death may result from pulmonary hypoplasia.Bilateral renal agenesis is incompatible with extrauterine life & produces the Potter syndrome.