Left hemibody myoclonus due to anomalous right vertebral artery.
Mov Disord
; 20(1): 72-5, 2005 Jan.
Article
em En
| MEDLINE
| ID: mdl-15390038
ABSTRACT
A 43-year-old man presented with sporadic, sudden, brief, and involuntary jerks of his left limbs and trunk muscles. The electromyographic recordings showed short-lasting highly synchronized bursts, compatible with myoclonus limited to the left hemibody. Blink reflex, masseter silent period, cortical and spinal magnetic stimulation, somatosensory cortical evoked potentials, and electroencephalogram (EEG) were normal; the EEG back-averaging showed no spikes preceding the myoclonus. Magnetic resonance imaging and magnetic resonance angiography showed the presence of an anomalous nonectasic right vertebral artery compressing the right side of ventral medulla oblongata. We hypothesize that the aberrant right vertebral artery induced abnormal activation of descending motor tracts responsible for the myoclonus.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Artéria Vertebral
/
Lateralidade Funcional
/
Mioclonia
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article