In this report, we present 2 cases of hemiballism-hemichorea caused by non-ketotic hyperglycemia. Both were old patients, aged 62 and 69 respectiviely. Brain computed tomography (CT) revealed a hyperdense lesion in the putamen and magnetic resonance imaging (MET) demonstrated an abnormal hypointense focus in T1-weighted and hypointense focus in T2-weighted images at the corresponding areas for both cases. Their hyperkinesia disappeared with control of hyperglycemia. Follow-up in 1 patient demonstrated complete resolution of the lesion by CT 3 months later, that remained abnormal until 6 months later by MEI. The above findings suggest that hemiballism-hemichorea in old patients presented with non-ketotic hyperglycemia might show a charateristic clinicoradiological manifestation but of a good prognosis.