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Striatal hyperintensity on T1-weighted magnetic resonance images and high-density signal on CT scans obtained in patients with hyperglycemia and no involuntary movement. Report of two cases.

The authors report on two patients in whom an increased signal on T1-weighted magnetic resonance images and a high-density signal on computerized tomography scans of the striatum were demonstrated, both of which were associated with nonketotic hyperglycemia. Involuntary movements, which have been present in all previously reported cases, were not observed in either patient at any time during the entire course of illness. One patient displayed hemiparesis, whereas the other had dementia, gait disturbance, and urinary incontinence. Clinical and radiological abnormalities improved on control of blood glucose levels. Invasive studies, including biopsy procedures, should be avoided on encountering this disease given the good prognosis that results from simple medical treatment.