Non-ketotic hyperglycemic hemichorea
20 years old Asian female presented with acute onset of hyperglycemia in the context of undiagnosed diabetes mellitus. Presented with severe chorea movements of all 4 limbs, right worse than left. Slight improvement of chorea after 3 months of symptom onset.
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High T1 and low T2/FLAIR signal are seen in the caudate and lentiform nucleus.
Non ketotic hyperglycemic hemichorea (NHH) is rare, and is one of the causes of T1 bright basal ganglia.
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