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Definition of Pycnodysostosis

Pycnodysostosis: An inherited disorder of bone that causes short stature and abnormally dense brittle bones. Pycnodysostosis can be due to a defect in the enzyme cathepsin K. Sometimes spelled pyknodysostosis. The French artist Toulouse-Lautrec is thought to have had this disease. No specific treatment is available.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=5143
Last Editorial Review: 3/19/2012

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