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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:Eye of the tiger anomaly of globus pallidus
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Accession:HP:0002454 term browser browse the term
Definition:The presence, on T2-weighted magnetic resonance imaging, of markedly low signal intensity of the globus pallidus that surrounds a central region of high signal intensity in the anteromedial globus pallidus, producing an eye-of-the-tiger appearance. The sign is thought to represent iron accumulation in the globus pallidus.
Comment:This sign is observed upon magnetic resonance tomography (MRI). It can be seen in several diseases including Hallervorden-Spatz syndrome, where the pathophysiology has been hypothesized to be related to iron deposition in the globus pallidus (associated with low signal intensity on T2-weighted images) accompanied by other pathological processes such as gliosis and water accumulation that are responsible for the high signal intensity at the central globus pallidus.
Synonyms:alt_id: HP:0012677
 xref: UMLS:C4025705


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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
            Abnormal brain morphology 0
              Iron accumulation in brain 0
                Eye of the tiger anomaly of globus pallidus 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 forebrain morphology 0
                Abnormal cerebral morphology 0
                  Abnormal cerebral subcortex morphology 0
                    Abnormal basal ganglia morphology 0
                      Abnormal globus pallidus morphology 0
                        Eye of the tiger anomaly of globus pallidus 0
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