Posterior reversible encephalopathy syndrome: pitfalls of T2 shine through in MRI

Posterior reversible encephalopathy syndrome (PRES) usually presents with rapid onset of symptoms, including headache, seizure, altered level of consciousness, and visual disturbance [1]. The disorder is common in patients with renal disease and often coexists with conditions such as hypertension, exposure to immunosuppressive drugs. The pathophysiological mechanisms underlying PRES are not fully understood; however, the most common mechanism is related to increasing blood pressure causing failure of brain autoregulation.