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Hypodense artery sign in cerebral fat embolism
  1. Jose David Avila
  1. Department of Neurology, Geisinger Medical Center, Danville, Pennsylvania, USA
  1. Correspondence to Dr Jose David Avila, Department of Neurology, Geisinger Medical Center, Danville, Pennsylvania 17822-3050, USA; avila.jd83{at}gmail.com

https://doi.org/10.1136/practneurol-2017-001603

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    A female patient in her mid 70s underwent aortic valve replacement and single-vessel coronary artery bypass grafting, but after awakening from anaesthesia was found to have left-sided weakness. She had a history of severe aortic stenosis, hypertension, diabetes mellitus and hyperlipidaemia. On examination, there was right gaze deviation and a dense left hemiplegia. Non-contrasted CT scan of head and cerebral angiography showed a 1.5 cm hypodense filling defect in the distal M1 segment of the right middle cerebral artery, measuring –80 Hounsfield units, consistent with fat density (figure 1A,B). There were also early ischaemic changes in the right middle cerebral artery territory. The patient …

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    Footnotes

    • Contributors JDA evaluated the patient, gathered the data, conceived the concept and design of the manuscript, and drafted and revised the manuscript for content.

    • Competing interests None declared.

    • Provenance and peer review Not commissioned; externally peer reviewed. This paper was reviewed by Robert Simister, London, UK.