Achondrogenesis type 2

A rare, lethal type of achondrogenesis, and part of the spectrum of type 2 collagen-related bone disorders, characterized by severe micromelia, short neck with large head, small thorax, protuberant abdomen, underdeveloped lungs, distinctive facial features such as a prominent forehead, a small chin, a cleft palate (in some) and distinctive histological features of the cartilage.