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Acute hemichorea with T1 ischemic hyperintensity associated with steno‐occlusive middle cerebral artery dissection
Author(s) -
Chee Yong Chuan,
Ong Beng Hooi
Publication year - 2020
Publication title -
neurology and clinical neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.125
0ISSN - 2049-4173
DOI - 10.1111/ncn3.12340
Subject(s) - medicine , middle cerebral artery , hyperintensity , magnetic resonance imaging , calcification , dissection (medical) , radiology , infarction , cardiology , ischemia , myocardial infarction
Acute 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.