Hypercoagulability in patients with COVID-19
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The purpose of this article is to describe arterial and venous thromboembolism in the abdomen, pelvis, and lower extremities in patients with COVID-19.

Eighty-two patients with COVID-19 who underwent abdominal ultrasound or CT were retrospectively compared with 82 patients without COVID-19 for thromboembolism and solid-organ infarction. Nine (11%) patients with COVID-19 had thromboembolic findings, with medium to large arterial thrombi in five. One patient without COVID-19 had known portal vein thrombus on CT. Thromboembolic findings occurred more frequently in patients with than without COVID-19.

Although COVID-19 typically presents with respiratory symptoms, patients may not experience symptoms or may develop multiple-organ dysfunction syndrome (MODS). MODS in COVID-19 may result from hypercoagulability, with micro- and macrothrombi. Some reports have described deep venous thrombosis and pulmonary embolism.

Some patients may have hypercoagulability, often with extremely elevated coagulation and inflammatory markers. Radiologists may not be aware of this potential complication of COVID-19, although reports are emerging in the literature. Therefore, the purpose was to describe arterial and venous thromboembolic findings on abdominopelvic imaging in patients with COVID-19.

Source: https://www.ajronline.org/doi/full/10.2214/AJR.20.23617
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