Hemorrhagic Posterior Reversible Encephalopathy Syndrome in a Patient With Larynx Carcinoma.

Significance Statement Posterior reversible encephalopathy syndrome (PRES) is characterized by variable neurological findings such as headache, deterioration in mental condition, loss of consciousness and visual loss. The disease results with impairment of the cerebral blood flow autoregulation. Ondansetron, serotonin (5HT-3) receptor antagonist, may cause the haemorrhagic PRES.