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HUMAN PHENOTYPE - ANNOTATIONS

The Human Phenotype Ontology (HPO) is downloaded weekly from http://compbio.charite.de/hudson/job/hpo/lastStableBuild/artifact/ontology/release/hp.obo. The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at http://www.human-phenotype-ontology.org/.
Term:Suprasellar arachnoid cyst
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Accession:HP:0012489 term browser browse the term
Definition:An arachnoid cyst that progressively enlarges from an abnormality in the membrane of Liliequist or in the interpeduncular cistern, and typically, expands from the prepontine space, displacing the floor of the third ventricle upwards, the pituitary stalk and optic chiasm upwards and forwards, and the mammillary bodies upwards and backwards.
Comment:As the cyst increases in size it fills and occludes the third ventricle, and distorts and blocks the aqueduct, which finally results in hydrocephalus.
Synonyms:xref: UMLS:C4022882


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Term paths to the root
Path 1
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
            Central nervous system cyst 0
              Intracranial cystic lesion 0
                Suprasellar arachnoid cyst 0
Path 2
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
            Abnormal meningeal morphology 0
              Abnormal arachnoid mater morphology 0
                Arachnoid cyst 0
                  Suprasellar arachnoid cyst 0
paths to the root