A 12-year-old boy with tuberous sclerosis complex. Axial T2-weighted image shows cortical tubers as well-circumscribed areas of high signal intensity (white arrows) and subependymal nodules along the ventricular surface (black arrowheads). Note radial migration line appearing as a thin, straight band of hyperintensity extending from the juxtaventricular white matter to the cortex (black arrow), and white matter cyst-like lesion located in deep white matter near the atrium of the right lateral ventricle (white arrowhead).