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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

Term:Fibrous dysplasia of the bones
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Accession:HP:0010734 term browser browse the term
Definition:Tumor-like growths that consist of replacement of the medullary bone with fibrous tissue, causing the expansion and weakening of the areas of bone involved. Especially when involving the skull or facial bones, the lesions can cause externally visible deformities. The skull is often, but not necessarily, affected, and any other bone or bones may be involved. Fibrous dysplasia can either effect isolated bones (Monostotic fibrous dysplasia) or also generalized all bones of the body (Polyostotic fibrous dysplasia).
Synonyms:xref: MESH:D005357;   SNOMEDCT_US:10623005;   UMLS:C0016063

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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
              Fibrous dysplasia of the bones 0
                Monostotic fibrous dysplasia 0
                Polyostotic fibrous dysplasia 0
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