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The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

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Accession:HP:0000938 term browser browse the term
Definition:Osteopenia is a term to define bone density that is not normal but also not as low as osteoporosis. By definition from the World Health Organization osteopenia is defined by bone densitometry as a T score -1 to -2.5.
Synonyms:exact_synonym: Generalised osteopenia;   Generalized osteopenia;   Osteopaenia
 alt_id: HP:0002768;   HP:0002799;   HP:0002800
 xref: MSH:D001851;   SNOMEDCT_US:312894000;   SNOMEDCT_US:78441005;   UMLS:C0029453;   UMLS:C0747078

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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the musculoskeletal system 0
        Abnormality of the skeletal system 0
          Abnormal skeletal morphology 0
            Abnormal bone structure 0
              Abnormal bone ossification 0
                Abnormality of bone mineral density 0
                  Reduced bone mineral density 0
                    Osteopenia 0
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