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Figure 1: Axial T2-weighted MRI images (a and b) and axial fluid-attenuated inversion recovery (FLAIR) images (c) show abnormal hyperintense signal involving subcortical and deep lobar white matter of the right frontal-parietal-insular region with selective cortical gray matter sparing. Note the involvement of the right basal ganglia, genu, and body of corpus callosum with extension to contralateral side. Axial susceptibility image (d) does not show abnormal blooming. Diffusion-weighted and apparent diffusion coefficient (ADC) images (e and f) do not show diffusion restriction. Lesion appears hypointense on T1-images (g) and does not show post-contrast enhancement (h)

Figure 1: Axial T2-weighted MRI images (a and b) and axial fluid-attenuated inversion recovery (FLAIR) images (c) show abnormal hyperintense signal involving subcortical and deep lobar white matter of the right frontal-parietal-insular region with selective cortical gray matter sparing. Note the involvement of the right basal ganglia, genu, and body of corpus callosum with extension to contralateral side. Axial susceptibility image (d) does not show abnormal blooming. Diffusion-weighted and apparent diffusion coefficient (ADC) images (e and f) do not show diffusion restriction. Lesion appears hypointense on T1-images (g) and does not show post-contrast enhancement (h)