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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:0033375 term browser browse the term
Definition:Anthracosis is the deposition of black carbon pigment. It is commonly seen in perihilar lymph nodes as well as within lung parenchyma. There can be prominent storiforming (i.e., spiral patterning) of histiocytes, to such an extent as to mimic a neoplastic lesion histologically. Anthracosis is a common finding in smokers and polluted city dwellers.
Comment:See Figure 15.11 in PMCID:PMC7262960.

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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 lung morphology 0
              Abnormal pulmonary interstitial morphology 0
                Anthracosis 0
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