What is posterior reversible encephalopathy syndrome (PRES)?

Postengraftment (Days 30-100) Headache, confusion, seizures, and visual loss and most often caused by malignant hypertension. In HSCT patients, the intractable hypertension and the associated PRES have been linked to the use of calcineurin-inhibitors (tacrolimus and cyclosporine). The diagnosis of PRES is typically made on MRI imaging of the brain, which reveals a characteristic pattern of enhancement, commonly in the posterior circulation, which may be seen, but poorly on CT Treatment: Control HTN, stop calcineurin inhibitors