Abstract
AbstractAcute hemichorea with accompanying T1 hyperintensity on magnetic resonance imaging has never been reported in steno‐occlusive middle cerebral artery (MCA) dissection. This characteristic radiological finding which differs from known ischemic changes has been attributed to incomplete infarction with selective neuronal loss. Arguments have also shuttled between gemistocytic astrocyte accumulation, tissue calcification, and paramagnetic substance deposition. We report an unusual case of acute hemichorea caused by proximal MCA dissection with characteristic imaging appearance of delayed ischemic hyperintensity.
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