ABSTRACT

Posterior Reversible Encephalopathy Syndrome (PRES) is a neuroradi­ologic diagnosis, first described in 1996 by Hinchey et al. (1), consisting of haedache, seizure s, altered mental status and a specırum of visual deficits ranging from visual neglect to corlical blindness. It is of ten re­lated to an acute increase in arterial blood pressure, is clinically indis­tinguishable from hypertensive encephalopalhy, and has been associ­ated with preeclampsia, renal failure, and hypercalcemia (2). Although imaging modalities demonstrate generally hypodensities, usually of the posterior white and grey matter; the temporal and frontal lobes, brains­tem and cerebellum may be involved (2,3).