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Evolving hyperdense middle cerebral artery sign
  1. D Manawadu,
  2. K Butcher
  1. Division of Neurology, Faculty of Medicine, University of Alberta, Alberta, Canada
  1. Dr K Butcher, MD, PhD, FRCP(C), University of Alberta, 2E3 WMC Health Sciences Centre, Edmonton, Alberta, Canada T6G 2B7; ken.butcher{at}

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A 48-year-old male presented with headache two weeks after sustaining a neck injury playing hockey. His first CT brain scan (fig 1) revealed a right hyperdense middle cerebral artery sign (HMCAS). After 7 hours, however, the patient developed new left-sided weakness and a second CT (fig 2) was …

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  • Competing interests: None.

  • Patient consent: Obtained.