Irregular enhancing lesion involving the posteromedial right thalamus. This is contiguous with thick abnormal enhancing tissue along surface of thalamus that extends anteromedially filling the CSF space to the right of the pineal gland, abutting the adjacent internal cerebral vein, as well as extending inferolaterally throughout the right ambient cistern, surrounding the PCA.
Separate to this, there is a further enhancing lesion with ill-defined margins within the right dorsolateral pons that results in positive mass effect and slight effacement of the adjacent fourth ventricle. This measures up to 11 mm in coronal oblique plane. No hydrocephalus. The lesions are associated with surrounding FLAIR signal hyperintensity. No further intra or extra-axial lesion demonstrated.