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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:Third ventricle colloid cyst
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Accession:HP:0032578 term browser browse the term
Definition:An epithelial lined cyst filled with gelatinous material. The gelatinous material commonly contains mucin, old blood, cholesterol, and ions. Most colloid cysts identified are currently asymptomatic and identified incidentally on imaging. When a colloid cyst does cause issues, it most commonly causes obstructive hydrocephalus.
Comment:The colloid cyst is most commonly found in the rostral third ventricle at or near the foramen of Monro. The foramen of Monro is the conduit of cerebrospinal fluid (CSF) outflow from the lateral ventricles to the third ventricle. A colloid cyst can act as a ball valve, stopping CSF flow out of the lateral ventricles. If this occurs, CSF backs up into the lateral ventricles and causes ventriculomegaly and hydrocephalus.



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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
                Third ventricle colloid 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 brain morphology 0
              Abnormal cerebral ventricle morphology 0
                Abnormal third ventricle morphology 0
                  Third ventricle colloid cyst 0
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