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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:Abnormality of the choanae
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Accession:HP:0000415 term browser browse the term
Definition:Abnormality of the choanae (the posterior nasal apertures).
Synonyms:xref: UMLS:C4025855

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Term paths to the root
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Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of head or neck 0
        Abnormality of the head 0
          Abnormality of the face 0
            Abnormality of the nose 0
              Abnormality of the choanae 0
                Choanal atresia + 0
                Choanal stenosis + 0
paths to the root