Evaluate for SEGA, cortical tubers: Cardiac rhabdomyomas on fetal imaging. There high T1 and low T2 signal nodules at the bilateral caudothalamic grooves, measuring 10 mm on the right and 8 mm on the left, but no evidence of hydrocephalus. There are also several subcentimeter high T1 and low T2 signal subependymal nodules scattered along the bilateral lateral ventricular margins. Furthermore, there are numerous, predominantly linear high T1 and low T2 signal lesions in the bilateral cerebral hemisphere white matter, oriented perpendicular to the lateral ventricles, which likely represent radial migration bands related to cortical dysplasia. The cerebellum and brainstem appear to be unremarkable. There is no evidence of acute infarct. There is no midline shift or herniation. The major cerebral flow voids are grossly intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Findings compatible with tuberous sclerosis complex, including bilateral caudothalamic groove tumors, measuring up to 10 mm on the right side, which is suggestive of subependymal giant cell astrocytoma.