PMC4612475_01
T2-weighted MRI of the brain shows hyperintense lesion in the dorsal medulla and in the splenium of corpus callosum.
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MRI of the brain (T2-weighted and FLAIR) showed a hyperintense non-enhancing lesion in the posterior medulla as well as a hyperintense lesion in the splenium of corpus callosum (Figs. 1 and 2).
Axial FLAIR MRI sequence of the brain again shows hyperintense lesion in the dorsal medulla and in the splenium of corpus callosum.
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MRI of the brain (T2-weighted and FLAIR) showed a hyperintense non-enhancing lesion in the posterior medulla as well as a hyperintense lesion in the splenium of corpus callosum (Figs. 1 and 2).
Diffusion-weighted MRI of the brain shows the presence of the lesion in the splenium; however, it does not show the lesion in the dorsal medulla seen on T2 and FLAIR images. This shows that the two lesions are distinct in their etiology.
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The medullary lesion was not visible on diffusion-weighted MRI image while the splenial lesion was clearly visible (Fig. 3).