Posterior reversible encephalopathy syndrome

From RadsWiki

Jump to: navigation, search
This article is a stub. You can be a HUGE HELP to by expanding it.

If you do not feel comfortable editing the wiki, please contact for alternative ways to contribute content.


[edit] Discussion

  • Posterior reversible encephalopathy syndrome (PRES) is secondary to the inability of posterior circulation to autoregulate in response to acute changes in blood pressure.
    • Hyperperfusion with resultant disruption of the blood brain barrier
    • No infarction

  • Etiologies
    • Malignant hypertension
    • Toxemia of pregnancy
    • Renal disease
    • Immunosuppressive drugs (i.e. cyclosporine)
    • Antiphospholipid antibody syndrome

[edit] Imaging Findings

  • CT and MR imaging typically show symmetrically distributed areas of vasogenic edema predominantly within the territories of the posterior circulation.
  • The abnormalities affect primarily the white matter, but cortex is also involved.

[edit] Images

[edit] See Also

[edit] External Links

[edit] References