[Central pontine myelinolysis with regressive development and x-ray computed tomographic interpretation]

A 68 year-old woman presented after rapid correction of a hyponatremia a clinical picture suggestive of central pontine myelinolysis. Clinical disorders regressed but serial CT scans showed the late development of a central pontine low density area which persisted for several months. Such a lack of correlation between clinical and CT scan data has been previously reported. On the present case the demyelination lesions appeared to have resulted principally from the rapid increase of natremia.