This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New Born Infants, Subject name: Pediatrics
Which one of the following does NOT present with a large anterior fontanelle? 
Select and explain. 
A. Crouzon syndrome, B. Hypophosphatasia, C. Achondroplasia, D. Congenital rubella syndrome
A: Crouzon syndrome
Answer: A: Crouzon syndrome 
Explanation: a. Crouzon syndrome(Ref: Nelson's 20/e p 2817)Crouzon syndrome is a cause of craniosynostosis (premature fusion of sutures), so the fontanelle are small & close early.