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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:Pulmonary opacity
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Accession:HP:0031457 term browser browse the term
Definition:Opacity refers to any area that preferentially attenuates the x-ray beam and therefore appears more opaque than the surrounding area. It is a nonspecific term that does not indicate the size or pathologic nature of the abnormality.
Comment:Increased pulmonary opacity is caused by a decrease in the ratio of gas to soft tissue (blood, lung parenchyma and stroma) in the lung.

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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the respiratory system 0
        Abnormal respiratory system physiology 0
          Abnormal respiratory system morphology 0
            Abnormal pulmonary thoracic imaging finding 0
              Pulmonary opacity 0
                Combined cystic and ground-glass pattern on pulmonary HRCT 0
                Ground-glass opacification + 0
                Juxtaphrenic peak 0
                Parenchymal consolidation 0
                Pulmonary parenchymal band 0
                Subpleural curvilinear line 0
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