Figure 1: Pretreatment images. (a) Diffuse white matter edema in left temporal-occipital-parietal lobes, with mass effect (arrow) (CT). (b) A lesion over left occipital lobe, with perifocal edema and mass effect (arrow) (MRI). Post-treatment images. (c) Remission of edema after treatment (CT). (d) Partial regression of Toxoplasmic encephalitis after treatment (MRI)