PMC10359675_01
a, b Axial T2Wl demonstrates gyral swelling and hyperintensities in the right mesial temporal lobe, in particular the uncus and part of the hippocampus consistent with encephalitis. c Axial FLAIR demonstrates hyperintensities in the same areas. d Axial ADC map shows facilitated diffusion in the right mesial temporal lobe.
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F1
MRI of the brain and lumbar puncture were ordered. MRI of the brain showed gyral swelling and hyperintensities in the right mesial temporal lobe, suggestive of encephalitis (shown in Fig. 1).
PMC10359675_02
a Axial FLAIR demonstrates hyperintensities involving the right mesial temporal lobe, insular cortex, and basal ganglia with axial T2WI (b) showing hyperintensities consistent with encephalitis. c Post-contrast T1WI shows patchy areas of enhancement in the mesial temporal lobe.
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F2
MRI of the brain and lumbar puncture were ordered. MRI of the brain was suggestive of encephalitis (shown in Fig. 2).
PMC10359675_03
a, b Axial T2WI shows gyral inflammation and hyperintensities involving the right temporal lobe, posterior aspect of the temporal lobe, and right basal ganglia with restriction of diffusion on the corresponding axial DWI image (c). There is a subtle mass effect on the brainstem with mild leftward midline shift.
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F3
MRI of the brain and lumbar puncture were ordered. MRI of the brain showed signs suggestive of encephalitis (shown in Fig. 3).
PMC10359675_04
Axial post-contrast T1WI (a) and coronal post-contrast T1WI (b) show abnormal areas of enhancement involving the sulci of the left parietal lobe with prominent localized meningeal enhancement.
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F4
MRI of the brain and lumbar puncture were ordered. MRI of the brain was suggestive of encephalitis (Fig. 4).