PMC9554120_01
Brain MRI (A) and PET scan (B) for patient 1 early and later in his life..
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This indicates leptomeningeal enhancement and confirmed involvement of the entire right hemisphere (Figure 1A). Fluorodeoxyglucose-positron emission tomography at 3 years of age showed right hemisphere hypometabolism (Figure 1B).
PMC9554120_02
Brain MRI for patient 2, early and later in her life..
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At 13 years of age, avid enhancement was seen with no further atrophy (Figure 2).