High-signal-intensity lesions on T2-weighted MR images.
A, Wilson disease in a 12-year-old girl with dysarthria. T2-weighted axial MR image shows bilateral high signal intensity with central dark signal intensity in the putamen (arrows) and caudate nuclei (arrowheads).
B, Wilson disease in a 13-year-old girl with dysarthria. T2-weighted axial MR image shows bilateral symmetric high signal intensity in the putamen (black arrows) and caudate nuclei (white arrows). Slightly increased signal intensity in both thalami (black arrowheads) and globus pallidi (white arrowheads) is also noted.