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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:Abnormal midbrain morphology
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Accession:HP:0002418 term browser browse the term
Definition:An abnormality of the midbrain, which has as its parts the tectum, cerebral peduncle, midbrain tegmentum and cerebral aqueduct.
Synonyms:exact_synonym: Abnormal shape of midbrain;   Abnormality of midbrain morphology;   Abnormality of the mesencephalon;   Abnormality of the midbrain
 xref: UMLS:C4021755

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Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the nervous system 0
        Abnormal nervous system morphology 0
          Morphological central nervous system abnormality 0
            Abnormality of brain morphology 0
              Abnormal midbrain morphology 0
                Abnormal red nucleus morphology 0
                Abnormal substantia nigra morphology + 0
                Aplasia/Hypoplasia of the midbrain + 0
                Face of the giant panda sign 0
                Molar tooth sign on MRI 0
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