| Thanatophoric dwarfism
A lethal dwarfism characterized by micromelia, bowed long bones, enlarged head, flattened vertebral bodies, and muscular hypotonia; lack of pulmonary ventilation causes respiratory difficulties with cyanosis leading to death within the first few hours or days after birth; inherited as a new autosomal dominant, caused by a mutation in the FGFR3 gene. | |