Fig. 1. Orbit and brain MRI. Orbit MRI showed high signal intensities along the right optic nerve in a T2-weighted FLAIR image (A), and perineural enhancement in contrast-enhanced T1-weighted images (B and C). Brain MRI showed a focal high signal intensity in the left thalamus in a T2-weighted FLAIR image (D). Solid and dotted arrows indicate the areas with T2 high signal intensities and contrast enhancement, respectively.
