Ipsilateral Hemichorea-hemiballism in a Case of Postoperative Stroke

• Published in: Tremor and other hyperkinetic movements (New York, N.Y.) Vol. 6; p. 359
• Main Authors: Kannepalli, Narasinga Rao V L, Yadav, Ravi, Vazhayil, Vikas, Somanna, Sampath, Pal, Pramod Kumar
• Format: Journal Article
• Language: English
• Published: Columbia University Libraries/Information Services 14-04-2016; Ubiquity Press
• Subjects: Case Reports
• ISSN: 2160-8288; 2160-8288
• DOI: 10.7916/D8C53KQR

BACKGROUNDIpsilateral hemiballismus refers to the rare occurrence of hemiballism developing on the same side of a brain lesion. CASE REPORTWe describe a rare case of postoperative ipsilateral hemiballism in a patient who underwent pituitary adenoma resection and experienced a right internal cerebral artery territory infarct. We review the literature on hemichorea hemiballismus (HCHB) and explore various mechanisms for its occurrence. DISCUSSIONOnly three cases of ipsilateral hemiballism have been described, and the exact pathophysiology remains unknown. A dominant left hemisphere with corpus callosal connections to the right basal ganglia is the most probable explanation for this unusual event.