PMC9881484_01
MRI of brain on axial T2-weighted image (a) shows multiple flow voids in the right frontal lobe (red arrow) consistent with arteriovenous malformation as well as multiple hyperintense T2 signal areas (white arrows) in the white matter bilaterally. Fluid-attenuated inversion recovery axial images show hyperintensities in the bilateral thalami (b), left globus pallidus, left putamen, bilateral cerebral white matter, and brainstem (c). MRI of the spine shows patchy hyperintense signal areas (arrows) in the brainstem, cervical spinal cord, and thoracic spinal cord on T2-weighted sagittal image (d). MRI: magnetic resonance imaging.
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F1
Magnetic resonance imaging (MRI) (Fig. 1) of the brain and spine was then performed to explore other causes of her neurological deterioration.
Two years after initial presentation, T2-weighted axial (a) MRI image shows resection bed of removed arteriovenous malformation from right frontal lobe. Fluid-attenuated inversion recovery axial (b, c) MRI images of the brain show resolution of white matter lesions in the thalamus (a) and brainstem (b). There was a decrease in the number and size of other lesions during the interval, and no new lesions were found. T2-weighted sagittal (d) MRI image of spine shows interval improvement in hyperintense T2 signal areas in the spinal cord. MRI: magnetic resonance imaging.
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Repeat MRI at that time (Fig. 2) showed a decrease in the number and size of the thalamic and brainstem lesions without new lesions, further supporting the diagnosis of clinically isolated syndrome.