<prompt> Absent lateral 13rd of clavicle is seen in -HyperparathyroidismTurners syndromeFibrous dysplasiaCleidocranial dysostosis  <response>: Cleidocranial dysostosis is a developmental affection of the skeleton in which there is deficient ossification of bones formed in the membrane.The clavicle may be absent laterally, in its middle third, occasionally in its sternal third or very rarely in its entire length. 