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Putamen hyperperfusion in subcortical–supraspinal myoclonus
  1. Carlo Civardi1,
  2. Alessandra Collini1,
  3. Alessandro Stecco2,
  4. Alessandro Carriero2,
  5. Francesco Monaco1
  1. 1Department of Neurology, Università del Piemonte Orientale “A Avogadro”, Azienda Ospedaliera “Maggiore della Carità”, Novara, Italy
  2. 2Department of Radiology, Università del Piemonte Orientale “A Avogadro”, Azienda Ospedaliera “Maggiore della Carità”, Novara, Italy
  1. Correspondence to Dr C Civardi, Clinica Neurologica, Azienda Ospedaliera “Maggiore della Carità”, C so Mazzini 18, Novara 28100, Italy; c_civardi{at}yahoo.com

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A 73-year-old man with a history of hypertension and dyslipidaemia acutely developed brief and repetitive muscular jerks (about 1 min each) on the left side of the body. On admission, neurological and general examination were normal apart from continuous hyperkinetic movement. Several electroencephalographic recordings showed no epileptiform activity and non-enhanced brain CT was normal. Infective, inflammatory, metabolic and toxic aetiology were excluded. Neurophysiological characterisation of myoclonus showed a normal median nerve somatosensory evoked …

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