Central pontine myelinolysis (CPM) is an osmotic demyelination syndrome that is typically associated with hyponatremia or the rapid correction of hypernatremia. The specific mechanism by which the osmotic demylination occurs is not completely understood. Here we describe a patient presenting with CPM confirmed by magnetic resonance imaging (MRI) who had persistent hyperglycaemia as a result of untreated type 2 diabetes in the presence of normal serum sodium levels, and had a good prognosis.
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