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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:0030853 term browser browse the term
Definition:An abnormality in which the internal thoraco-abdominal organs demonstrate abnormal arrangement across the left-right axis of the body.
Comment:In the normal body, the internal organs are arranged in different patterns on the right and left sides, and are not mirror images of each other. Hence, if asymmetry of the thoracic and abdominal organs is the usual or normal situation, the syndrome of visceral heterotaxy includes patients with an unusual degree of symmetry of some of the thoracic and abdominal organs, and the atrial appendages within the heart.
Synonyms:exact_synonym: Heterotaxia
 xref: Fyler:0190;   Fyler:190;   MESH:D059446;   SNOMEDCT_US:14821001;   SNOMEDCT_US:24614000;   UMLS:C0266642

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  Human phenotype 0
    Phenotypic abnormality 0
      Growth abnormality 0
        Heterotaxy 0
          Abnormality of abdominal situs + 0
          Isomerism + 0
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