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56-year-old man diagnosed with COVID-19 11 days prior to admission presented with mixed aphasia and right hemiparesis. (a) Coronal CTA neck image with lung windows shows subtle bilateral upper lobe peripheral ground glass opacities compatible with COVID-19 pneumonia, unsuspected at the time of imaging. Note a floating thrombus present within the aortic arch (black arrow), better seen on coronal image (b) with soft tissue windows (white arrow).
