Numerous T2 hyperintense lesions of varying size with no overt mass effect, consistent with tubers, are scattered peripherally through both cerebral hemispheres (cortical/subcortical distribution), with additional signal abnormality anterior in the right cerebellar hemisphere.
In addition, numerous tiny isointense subependymal nodules, consistent with hamartomata, line both lateral ventricles. Features are in keeping with tuberous sclerosis.
A heterogeneous and calcified (confirmed on CT) periventricular nodule near the foramen of Munro may represent a small giant cell astrocytoma, or merely a large subependymal nodule.