Multiple nodular, and ring-enhancing lesions of various sizes with surrounding oedema in the posterior fossa and supratentorial region predominantly in the corticomedullary junction, basal ganglia and right thalamus.
The lesion located in the left frontal precentral region shows a series of concentric rings with hyperintense and isointense signals alternatingly on the FLAIR sequence "concentric target sign" with prominent surrounding oedema. An adjacent high T1 curvilinear structure is noted suggestive of a cortical vein thrombosis. Slow flow within the transverse sinuses mimicking venous sinus thrombosis.
The lesion located in the left posterior temporal region shows a ring enhancement with enhancing mural nodule "eccentric target sign"