Legend Axial T2 (left) and FLAIR (right) images reveal abnormal high signal involving the pons with sparing of the corticospinal tracts and periphery, including the pontine tegmentum.

Legend A more superior FLAIR image (left) shows extension of the abnormality into the upper pons. A post-gad image (right) reveals no enhancement of the lesion. Key words: mri metabolic white matter disease demyelinating

Brain Diagnosis: Central pontine myelinolysis