Legend A spherical lesion is seen in the left frontal lobe. It is centered in the gray white junction and is surrounded by vasogenic edema. It has a low signal rim on T2 images and an irregular contour directed towards the central white matter.

Legend The lesion is bright on diffusion weighted images consistent with restricted diffusion. The periphery is low signal on the gradient-echo image (left).

Legend The lesion demonstrated thin, regular peripheral enhancement. The enhancing rim is marginally thinner towards the central white matter. Key words: mri dwi infection inflammation

Brain Diagnosis: Streptococcal brain abscess