CNS imaging findings in LYG. T1-weighted postcontrast (A,D), T2-weighted (B,E), and fluid attenuation inversion recovery (C,F) sequences from MRI of the brain in a 43-year-old woman (A-C) with LYG demonstrates a large, enhancing right temporal lesion with central necrosis, and in a 39-year-old man (D-F) with LYG demonstrates a large, enhancing left posterior occipital lesion with central necrosis.