title: Acute onset hemichorea-hemiballism. MRI signal abnormality in a metabolically normal patient. A case report.
abstract: Abnormal signals involving the basal ganglia on MR images have been reported with new-onset hemichorea-hemiballism, typically in elderly Asian patients. The most common cause is a vascular lesion, but many cases are reported in association with hyperglycemia. We describe one case of acute onset chorea-hemiballism with abnormal MRI signal in the basal ganglia but with no systemic abnormality.
authors.affiliation: Imaging Sciences and Interventional Radiology Department, AMRI Hospital; Kolkata, India - sukalyanp@yahoo.co.in.
authors.forename: S
authors.initials: S
authors.lastname: Purkayastha