Case #14

CT

• Ill-defined hypoattenuating areas involving the left basal ganglia, right thalamus, and bilateral internal capsule
• Internal foci of hyperattenuation

MRI

• Peripherally enhancing lesions measuring up to 2.1 cm in the right thalamus and 1.5 cm in the left lentiform nucleus
• Internal T1 signal hypointensity and mild T2/FLAIR signal hyperintensity
• Corresponding peripheral restricted diffusion, more pronounced with the right thalamic lesion
• Surrounding T2/FLAIR signal hyperintensity and local mass effect with crowding of the third ventricle