title: [Symptomatic chronic hemichorea of a vascular lesion in the contralateral putamen].
abstract: We present a case of chronic multifocal choreform dyskinesia with evident anatomical and temporal relationship with a contralateral putamen lesion of ischaemic origin after embolism originating in a partially thrombosed intracavernous caratid aneurysm. Isolated putamen lesions are associated with abnormal dystonic type involuntary movements, bilateral to Parkinsonisms, sometimes associating both these types of movements, and lesions involving the cauda giving rise to choreic movements. Given the rarity in the literature of this entity, chorea associated with unilateral ischaemic putamen lesion, and the absence of pathogenic mechanisms which might satisfactorily explain it, we propose a series of possibilities which could underlie this type of chorea. If putamen macroscopic lesions are really more associated with dystonic manifestations, it is possible that, in some cases they might selectively alter base ganglia circuits and bring on chronic choreas rather than dystonia.
authors: Servicio de Neurologia, Hospital Universitario Virgen Macarena, Sevilla.
authors: L
authors: L
authors: Redondo
authors: J
authors: J
authors: Chacón
authors: J
authors: J
authors: Valencia
authors: F
authors: F
authors: Viñuelas
authors: J L
authors: JL
authors: Pérez Alonso
authors: C
authors: C
authors: García Flores
mesh_terms: D000368:Aged; D002343:Carotid Artery, Internal / Q000503:physiopathology; D002819:Chorea / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology*; D002908:Chronic Disease; D005260:Female; D007839:Functional Laterality; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D011699:Putamen / Q000503:physiopathology*
vernacular_title: Hemicorea crónica sintomática de una lesión vascular en el putamen contralateral.