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Brain MRI of patient 1 at presentation showed an ill-defined 1 cm right medial occipitotemporal gyrus mass and a 1.8×1.7×1.5 cm mass in the subcortical white matter of the right precentral gyrus with surrounding edema ( A). After 14 days of anti-toxoplasma treatment and antiretroviral therapy, a follow-up MRI revealed enlargement of the prior right precentral gyrus lesion now to maximum size of 2.2 cm ( B).
