Osteopenia is is increased radiolucency of bone, one of the most common findings in skeletal radiology.
The most common cause by far of osteopenia is osteoporosis. However, there are many disease entities that can cause osteopenia, so the mere finding of radiolucent bone does not make this an automatic diagnosis. Rather, it prompts a search for other more specific clues to the exact underlying disorder.
Radiodgraphic clues include: osteomalacia (Looser zones), hyperparathyroidism (subperiosteal resorption), disseminated multiple myeloma (focal lytic lesions)
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