<prompt> Clavicle is absent in:Osteogenesis imperfectaCleidocranial dysostosisFibrous dysplasiaOsteopetrosis  <response>: Cleidocranial DysplasiaMarie and Saintons disease, Scheuthauer-Marie-Sainton syndrome, mutational dysostosis.A congenital disorder of bone formation manifested with clavicular hypoplasia or agenesis with a narrow thorax, which allows approximation of the shoulders in front of the chest. 