SEGA and cortical tubers for change: Tuberous sclerosis and seizures. There are unchanged supratentorial cortical and subcortical lesion with T2 hyperintensity with a linear configuration. There are also multiple unchanged heterogeneously enhancing subependymal lesions with susceptibility effect, the largest of which is located along the atrium of the left lateral ventricle that measures up to approximately 15 mm. There is no evidence of intracranial hemorrhage or acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There are small retention cysts in the left maxillary and right sphenoid sinuses.
No significant interval change in the intracranial stigmata of tuberous sclerosis, including the left peritrigonal presumed SEGA and multiple zones of cortical dysplasia.