PMC10331276_01
Axial contrast CT Brain demonstrates ill-defined hypodensity(red arrow) in the white matter at the right parietal and left fronto-parietal regions in keeping with edema.
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Computed tomography (CT) brain (Fig. 1) was done show ill-defined hypodensity in the white matter at the right posterior parietal and left fronto-parietal regions.
A) Axial T2 and B) Axial FLAIR showing "concentric" target sign with concentric alternating hypointense and hyperintense rims at right high parietal and left frontal lobe. T2WI and FLAIR showing marked perilesional edema. c) Axial T1W contrast-enhanced MRI showing a ring enhancing lesion at right high parietal and left frontal lobe with eccentric nodule suggestive of eccentric target sign.
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Magnetic Resonance Imaging (MRI) of brain (Fig. 2) was also done and showed multiple well-defined intra-axial cerebral lesions of varying sizes seen at left high frontal parasagittal region, bilateral parietal regions, bilateral parasagittal parietal region, and right basal ganglia region (involving the posterior limb of right internal capsule and right thalamus).