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Cerebral contrast staining mimicking parenchymal haemorrhage in a stroke patient
  1. Elvin Yuan Ting Lim and
  2. Saravana Kumar Swaminathan
  1. Neuroradiology, National Neuroscience Institute, Singapore
  1. Correspondence to Dr Elvin Yuan Ting Lim; lytelvin{at}


A 75-year-old female patient presented with signs and symptoms of a right hemispheric syndrome. A CT scan of the brain with angiogram showed an acute infarct in the right middle cerebral artery (MCA) territory secondary to thromb-occlusion of the M1 segment of the right MCA. A follow-up CT scan 2 weeks later showed a large hyperdense region in the infarcted area. With the aid of a dual-energy CT scan, this was eventually shown to be due to contrast staining from an earlier administration of iodinated contrast on the same day, rather than frank haemorrhagic conversion of the recent right MCA infarct.

  • radiology
  • neuroimaging
  • headache (including migraines)

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  • Contributors EYTL was involved in obtaining patient’s consent, acquisition of information and images and drafting and revising the report. SKS provided additional inputs to achieve the final submitted draft.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Parental/guardian consent obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.