Figure 1: (Magnetic resonance imagings) A, B, C, D: In cerebral magnetic resonance (MR) images, T2-weighted Images (A, B) and fluid-attenuated inversion-recovery (FLAIR) images (C, D) on first visit day revealed poorlydemarcated high intensity area (arrow) in brainstem and bilateral cerebellar hemisphere. E: In diffusion-weighted imaging (DWI) on first visit day, there was no abnormality in the lesions, as were detected in FLAIR images.