<prompt> All of the following are features of pyle disease exceptIt is an autosomal recessive diseaseIt is an epiphyseal dysplasiaMental retardation is uncommonDental caries and mandibular prognathism  <response>: Answer- B. It is an epiphyseal dysplasiaMetaphyseal dysplasia, also known as Pyles disease, Pyles syndrome, Pyle-Cohn syndrome, and Bakwin-Krida syndrome is a rare disease in which the outer pa ofthe shafts oflong bones is thinner than normal and there is an increased ihance of fractures. 