Cleidocranial dysostosis or Cleidocranial dysplasia is a hereditary congenital abnormality of humans. It has one or more of these features:- For the scientific journal Heredity see Heredity (journal) Heredity (the adjective is hereditary) is the transfer of characters from parent to offspring, either through their genes or through the social institution called inheritance (for example, a title of nobility is passed from individual to individual according to relevant customs and... A congenital disorder is a medical condition or defect that is present at or before birth (for example, congenital heart disease). ... Abnormality is a subjectively defined characteristic, assigned to those with rare or dysfunctional conditions. ...

• The collarbones are partly or completely missing. If they are completely missing, he can make his shoulders touch each other in front of his chest: see image.
• The fontanelles of the skull are late in closing, or never close.
• Extra teeth.
• Permanent teeth not erupting.
• Dished forehead.

... This is about the human anatomical feature. ... A hippopotamus skull A skull, or cranium, is a bony structure of Craniates which serves as the general framework for a head. ... Permanent teeth are the second set of teeth formed in humans. ... A volcano is a geological landform (usually a mountain) where magma (rock of the Earths interior made molten or liquid by extremely high temperatures along with a reduction in pressure and/or the introduction of water or other volatiles) erupts through the surface of the planet. ... The forehead or brow is the bony vertical part of the head above the eyes. ...

External links

• http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Cleidocranial+Dysplasia