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
Child presents with micrognathia, retrognathia and Glossoptosis. What is the most probable diagnosis 
Select and explain. 
A. Russel - Silver Syndrome, B. Angelman Syndrome, C. Pierre Robin Syndrome, D. Treacher Collin Syndrome
C: Pierre Robin Syndrome
Answer: C: Pierre Robin Syndrome 
Explanation: None