This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Crouzon syndrome consists of 
Select and explain. 
A. Maxillary hypoplasia, B. Syndactyly, C. Macrocephaly, D. Microcephaly
A: Maxillary hypoplasia
Answer: A: Maxillary hypoplasia 
Explanation: Crouzon syndrome consists of Autosomal dominant (FGFR2 Gene) Craniosynostosis involving coronal suture Wide set bulging eyes and beaked nose Maxillary hypoplasia Underdeveloped upper jaw& protruding lower jaw Dental problems, hearing loss Hydrocephalus Ref: Nelson's, 20th edition, page 2819