Figure 1. Cerebral MRI during the disease course.

Cerebral MRI with multiple cerebral supratentorial lesions during the disease course: periventricular lesions with diffusion restriction, only slight hyperintensity on T2-weighted images (A). Progressive diffusion restriction and now clearly hyperintense lesions on T2-weighted images 2 weeks after disease onset (B) and 4 weeks after disease onset (C). ADC = apparent diffusion coefficient.