Ipsilateral Hemichorea-hemiballism in a Case of Postoperative Stroke

Kannepalli, Narasinga Rao V. L.; Yadav, Ravi; Vazhayil, Vikas; Somanna, Sampath; Pal, Pramod Kumar

Background: Ipsilateral hemiballismus refers to the rare occurrence of hemiballism developing on the same side of a brain lesion.

Case report: We 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.

Discussion: Only 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.


Also Published In

Tremor and Other Hyperkinetic Movements

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Academic Units
Center for Parkinson's Disease and Other Movement Disorders
The Center for Digital Research and Scholarship
Published Here
November 2, 2016