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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:Periarticular soft-tissue mass
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Accession:HP:0020127 term browser browse the term
Definition:A lump detected in the region that surrounds a joiny. In this context, mass is a general term for a lump or growth that may be caused by the abnormal growth of cells, a cyst, hormonal changes, or an immune reaction.
Comment:The word mass is often used interchangeably with tumor, which derives from the Latin word tumor that originally meant any form of swelling. A small mass may be asymptomatic. Larger masses may cause pain if they press on a nerve or organ, or may lead to other manifestations depending on their location. In general, the finding of a mass will lead to a workup to determine the nature of the mass.

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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 joint morphology 0
              Periarticular soft-tissue mass 0
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