22-year-old female with tuberous sclerosis. Evaluate subependymal giant cell astrocytoma. Redemonstrated is a large enhancing mass/giant cell astrocytoma at the left foramen of Monro, which measures 16 x 14 x 17 mm (AP x TR x CC), previously 15 x 14 x 18 mm and 17 x 13 x 16 mm on 5/12/2005. There is no significant interval change in the size and configuration of the ventricles and sulci. Again seen are several small enhancing subependymal nodules, which are unchanged in size. The larger ones at right foramen of Monro measures up to 4 mm and at the level of the right lateral ventricle trigone measures up to 6 mm, which are unchanged. There are also multiple foci of increased T2/FLAIR signal within the cortical and subcortical regions, which are unchanged from the prior study. There is no evidence of intracranial hemorrhage or acute infarct. There is no midline shift or herniation. The skull and extracranial soft tissues are unremarkable.
1. Findings are consistent with known tuberous sclerosis with stable subependymal giant cell astrocytoma, subependymal nodules, cortical/subcortical tubers and radial migrational lines. 2. Stable size of the ventricular system without evidence of ventriculomegaly.