This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
The following is not a feature of Pierre – Robin syndrome – 
Select and explain. 
A. Hearing defect, B. Coloboma Iris, C. Respiratory distress, D. Mandibular hypoplasia
B: Coloboma Iris
Answer: B: Coloboma Iris 
Explanation: Pierre Robin syndrome consists of -

Micrognathia
The foreshortened floor of mouth
CHDs
Cleft palate or high arched palate
Mandibular hypoplasia (Micrognathia) 
Respiratory obstruction
Normal size tongue