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: Orthopaedics
Pyle's disease has, 
Select and explain. 
A. Epiphyseal dysplasia, B. Metaphyseal dysplasia, C. Diaphyseal dysplasia, D. Sclerosis of cortex
B: Metaphyseal dysplasia
Answer: B: Metaphyseal dysplasia 
Explanation: Pyle's disease has - Metaphyseal dysplasia.
Engelmann's disease has - Diaphyseal dysplasia.