This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal Radiology, Subject name: Radiology
Wormian bones' are features of all, EXCEPT : 
Select and explain. 
A. Hypophosphatasia, B. Down's syndrome, C. Pyle's disease, D. Menke's kinky hair syndrome
C: Pyle's disease
Answer: C: Pyle's disease 
Explanation: Wormian bones (intersutural bones) can be seen in: Normal infants (up to 6 months of age) Down's syndrome Cleidocranial dysostosis Hypothyroidism Hypophosphatasia Healing phase of Rickets Osteogenesis imperfecta Otopalatodigital syndrome Kinky hair syndrome Progeria Pachydermoperiostitis Pyknodysostosis