The acronym for Cleidocranial dysplasia, a genetic disorder affecting the clavicles, teeth, and pubic bones. Also common in this disorder is spina bifida occulta. Rare with just over 500 cases reported worldwide. It is also commonly associated with craniofacial disorders.
See: Cleidocranial Dysplasia
Also: Cleidocranial Dysostosis,
Spina Bifida Occulta
Sources:
{1} Beighton, Peter. McKusick's Heritable Disorders of Connective Tissue, Fifth Edition. Mosby-Year Book, Inc., 645-646, 1993.
{2} Cleidocrenial Dysostosis, http://www.icondata.com/health/pedbase/files/CLEIDOCR.HTM, 2003.