<unk>  is a congenital disorder presenting several features and radiological findings, some which distinguish it from other osteochondrodysplasias. These include: fibroblastic dysplasia and fibrosis of chondrocytes (cells which form cartilage); and flared, widened long bone metaphyses (the portion of bone that grows during childhood). Other prominent features include dwarfism, shortened ribs that have a concave appearance, micrognathism (severely underdeveloped jaw), macrocephaly (enlarged head), thoracic hypoplasia (underdeveloped chest), enlarged stomach, platyspondyly (flattened spine), and the somewhat uncommon deformity of bifid tongue (in which the tongue appears split, resembling that of a reptile).
Fibrochondrogenesis
Endochondral ossification
Achondrogenesis
Intramembranous ossification
Heterotopic ossification
Bone resorption
Fibrocartilage callus
Bone remodeling