42 year-old male who presented with vague right sided stroke-like symptoms and was found to have nonketotic hyperglycemia. FINDINGS: Axial pre-contrastT1-weighted MR images of the brain through the basal ganglia and caudate nuclei from caudal to cranial (4a–c) demonstrate intrinsic T1 shortening confined to the left globus pallidus (arrows), corresponding to the hyperdensity seen on presenting CT. TECHNIQUE: 1.5T Philips Intera MR scanner, T1-weighted imaging, TR=586.65, TE=12, pre-contrast. FINDINGS: Axial post-contrast T1-weighted MR images of the brain through the basal ganglia and caudate nuclei from caudal to cranial (4d–f) corresponding to (4a–c) respectively demonstrate contrast enhancement respecting the neuroanatomic boundaries of the lentiform (straight arrows) and caudate nuclei (curved arrows) (left much greater than right). TECHNIQUE: 1.5T Philips Intera MR scanner, fat saturated T1-weighted imaging, TR=595.10, TE=12, with 18ml of gadodiamide (Omniscan, GE health care, Princeton, NJ) injection.