PMC9847581_01
Contrast-induced encephalopathy in brain computed tomography (CT) scans. (A,B) Emergency brain CT 5 h after the procedure showed diffuse contrast enhancement in the brain parenchyma and subarachnoid space with mild global brain edema and the softening foci in the left basal ganglia-insular area. (C,D) Brain CT 2 days after the procedure indicated diffuse enhancement disappeared, and the brain parenchyma was diffusely swollen and the lateral ventricle was slightly more compressed.
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F1
An emergency brain computed tomography (CT) scan was requested and revealed the diffuse contrast enhancement in brain sulci, fissures, cisterns, third ventricle, fourth ventricle, and subarachnoid space with mild global brain edema, and softening foci in the left basal ganglia-insular area (Figures 1A,B). Brain CT was reviewed and showed diffuse enhancement disappeared, but the brain parenchyma was diffusely swollen and the lateral ventricles were slightly more compressed than that in the previous scan (Figures 1C,D).
The brain and cervical spine magnetic resonance imaging (MRI) performed at 2 weeks. (A,B) Brain MRI showed the left basal ganglia-insular softening foci in T1 (A) and T2 (B) weighted image. (C-E) Cervical spine MRI showed diffuse hyperintense signal in the cervical cord in T2-weighted image (D) and fluid-attenuated inversion recovery (FLAIR) images (E), and normal findings were observed in T1-weighted image (C).
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F2
A magnetic resonance imaging (MRI) performed at 2 weeks revealed a diffuse hyperintense signal on FLAIR sequences in the cervical cord, which may be consistent with the patient's motor deficits and sensory disturbances, as well as a softening foci formation in the left basal ganglia-insular area (Figure 2).