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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:Dilation of Virchow-Robin spaces
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Accession:HP:0012520 term browser browse the term
Definition:Increased dimensions of the Virchow-Robin spaces (also known as perivascular spaces), which surround the walls of vessels as they course from the subarachnoid space through the brain parenchyma. Perivascular spaces are commonly microscopic, and not visible on conventional neuroimaging. This term refers to an increase of size of these spaces such that they are visible on neuroimaging (usually magnetic resonance imaging). The dilatations are regular cavities that always contain a patent artery.
Comment:Virchow-Robin spaces are commonly seen at magnetic resonance imaging. These perivascular spaces as fluid-filled spaces that follow the typical course of a vessel as it goes through gray or white matter. The spaces have signal intensity similar to that of cerebrospinal fluid (CSF) on all magnetic resonance sequences.
Synonyms:exact_synonym: Dilated Virchow-Robin spaces;   Perivascular spaces
 related_synonym: Dilated cerebral perivascular spaces
 xref: UMLS:C1853618;   UMLS:C4020719



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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 cardiovascular system 0
        Abnormality of the vasculature 0
          Abnormal vascular morphology 0
            Abnormal cerebral vascular morphology 0
              Dilation of Virchow-Robin spaces 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 vascular morphology 0
                Dilation of Virchow-Robin spaces 0
paths to the root