Presentation
Left upper limb weakness in a patient with a background of IV drug abuse
Patient Data
Multiple well defined ring enhancing lesion with significant perilesional edema and mass effect.
Multiple ring-enhancing lesion noted in the right high frontal lobe, temporal lobe and left anterior frontal lobe as seen on the CT with significant perilesional edema. These lesions show central low signal on T1 weighted images, high signal on T2/FLAIR and appears to show central true restricted diffusion.
Periphery of the lesion appears hypo-intense on the T2 weighted images. Dual rim sign is appreciated on T2-weighted imaging.
There is mass-effect with cortical sulcal over the right cerebral cortex and body of lateral ventricle.