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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:Aplasia/Hypoplasia of the ear
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Accession:HP:0008771 term browser browse the term
Definition:The presence of aplasia or developmental hypoplasia of the ear.
Synonyms:exact_synonym: Absent/small ear;   Absent/underdeveloped ear
 xref: UMLS:C4024627

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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the ear 0
        Abnormal ear morphology 0
          Aplasia/Hypoplasia of the ear 0
            Aplasia/Hypoplasia of the external ear + 0
            Aplasia/Hypoplasia of the inner ear + 0
            Aplasia/Hypoplasia of the middle ear 0
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