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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:Cerebral edema
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Accession:HP:0002181 term browser browse the term
Definition:Abnormal accumulation of fluid in the brain.
Comment:Cerebral edema refers to swelling within brain tissue due to the accumulation of fluid, and can occur as in response to almost any insulting agent. Edema canbe observed in and around regions of dead or dying brain, around metastases and abscesses, after traumatic injury, following hypoxic ischemic injury, and around primary brain tumors. There are at least five different types of edema: vasogenic, cytotoxic, hydrostatic, interstitial, and hypoosmotic. Three effects of edema are visible on imaging: (i) loss of gray-white matter differentiation; (ii) swelling of sulci (shrinking of gyri); and (iii) mass effects. On CT scanning, extensive low density may represent vasogenic edema. As the brain swells, not only do the sulci decrease, but all of the CSF spaces of the hemispheres (including the ventricles) decrease as well. Magnetic resonance tomography may show abnormalities of diffusion-weighted imaging (DWI), and Fluid attenuation inversion recovery (FLAIR) sequences. Phenotype terms involving cerebral edema thus reflect inference about the underlying processes responsible for these abnormalities on brain imaging.
Synonyms:exact_synonym: Brain edema;   Brain oedema;   Cerebral oedema;   Swelling of brain
 broad_synonym: Brain swelling
 xref: MESH:D001929;   SNOMEDCT_US:2032001;   UMLS:C0006114;   UMLS:C1527311

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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 metabolism/homeostasis 0
        Abnormal homeostasis 0
          Abnormality of fluid regulation 0
            Edema 0
              Cerebral edema 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
            Abnormality of brain morphology 0
              Abnormal forebrain morphology 0
                Abnormal cerebral morphology 0
                  Cerebral edema 0
paths to the root