Cardiomyopathy and myocarditis in severe or critically ill COVID-19 cases could contribute to the development of cardiac arrhythmias, including atrial fibrillation. Atrial fibrillation was a cause of fatality in 6.8% of patients with COVID-19 in Italy (17). The hypercoagulable state associated with COVID-19 also significantly contributes to the development of central vascular thrombosis (5). Attention to the cardiac chambers and appendages, as well as the thoracic aorta, should be made at CT angiography to avoid missing a cardiac thrombosis and potential source of embolism in abdominal vasculature, peripheral arterial vessels, and elsewhere (Fig 4, E1).