PMC8458754_01
MRI of the patient during his first time in the hospital, T2/fluid-attenuated inversion recovery (FLAIR) showing abnormally high signals around the midbrain aqueduct (arrow).
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F1
The magnetic resonance imaging (MRI) results only showed mild abnormal signals around the midbrain aqueduct in T2/fluid-attenuated inversion recovery (FLAIR) (Figure 1).
MRI of the patient during his second time in the hospital, T2/fluid-attenuated inversion recovery (FLAIR) showing abnormally high signals around the midbrain aqueduct, around the fourth ventricle, and in the dentate nuclei of the cerebellum bilaterally (arrows).
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F2
A second MRI examination showed abnormal signals around the midbrain aqueduct, around the fourth ventricle, and in the dentate nuclei of the cerebellum bilaterally in T2/FLAIR (Figure 2).
MRI reexamination of the patient after drug withdrawal during his second time in the hospital, T2/fluid-attenuated inversion recovery (FLAIR) showing abnormally high signals around the midbrain aqueduct, around the fourth ventricle, and in the dentate nuclei of the cerebellum bilaterally, which disappeared 9 days after drug withdrawal.
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F3
After 9 days, MRI showed the absence of intracranial lesions (Figure 3) and the main symptoms completely disappeared, except alleviated irritability.