Central pontine myelinolysis after rapid correction of hyponatremia: A magnetic resonance imaging study

Abstract
We describe a patient with severe hyponatremia (serum sodium 94 mmol/L) who developed encephalopathy and decorticate posturing after a 29 mmol/L rise in serum sodium concentration during the first 24 hours of correction. High‐resolution computed tomography of the pons was normal during the first, second, and twelfth weeks of the illness. Subsequent magnetic resonance imaging revealed a pontine lesion consistent with central pontine myelinolysis.