PMC3349960_01
Brain MRI on admission in Case #1. Serial images of axial fluid-attenuated inversion recovery magnetic resonance imaging and diffusion-weighted images showing high-intensity signals in the right dorsal medulla oblongata, bilateral dorsal midbrain, and left thalamus (A and B, arrows). Apparent diffusion coefficient values were increased (C, arrows). Follow-up FLAIR images at 20 days after admission showed that the high-intensity signals in the right dorsal medulla oblongata, bilateral dorsal midbrain, and left thalamus were markedly decreased (D).
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F1
FLAIR and diffusion-weighted brain MRI showed high signal intensity areas in the right dorsal medulla oblongata, ventral pons (predominantly on the left side), bilateral midbrain, and left hypothalamus, with no contrast enhancement (Figure 1A and B). ADC values were increased in these areas (Figure 1C). A brain MRI on Day 20 after admission showed the disappearance of the lesions (Figure 1D).
PMC3349960_02
Brain magnetic resonance imaging 13 days after admission in Case #2. Serial images of axial fluid-attenuated inversion recovery and diffusion-weighted images showing high-intensity signals in the bilateral cerebellar cortex and left caudate nucleus (A and B, arrows). Follow-up fluid-attenuated inversion recovery images at 27 days after admission showed that the high-intensity signals in the bilateral cerebellar cortex and left caudate nucleus were markedly decreased (C).
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F2
On Day 13 after admission, FLAIR and diffusion-weighted brain MRI showed high-signal-intensity areas in the bilateral cerebellar hemispheres and left caudate nucleus (Figure 2A,B). FLAIR brain MRI findings observed on Day 13 after admission had disappeared on Day 27 after admission (Figure 2C).