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Definition of Osteopenia

Osteopenia: Mild thinning of the bone mass. Osteopenia represents a low bone mass and is not as severe as osteoporosis. Osteopenia results when formation of new bone (osteoid synthesis) is not sufficient to offset normal bone loss (osteoid lysis).

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=8048
Last Editorial Review: 3/19/2012

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