Abstract
Abstract Involuntary movements following aneurysm surgery are rare. Here, we report the case of a patient who developed left hemichorea following surgical clipping of a right internal carotid artery bifurcation aneurysm. The movement disorder resulted from an acute infarct involving the head of the caudate nucleus. The patient responded well to symptomatic treatment, with complete resolution of chorea. The occurrence of new-onset involuntary movements following aneurysm surgery should raise the suspicion of infarcts involving basal ganglia structures.
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