Phlegmasia Cerulea Dolens Secondary to COVID-19 and May-Thurner Syndrome: A Case Report.

Coronavirus disease 2019 (COVID-19) is associated with significant thromboembolic risk. Extensive deep vein thrombosis can infrequently progress to phlegmasia cerulea dolens that carries high morbidity and mortality rates. We report a case of a middle-aged male presenting with phlegmasia cerulea dolens in the context of COVID-19 and underlying May-Thurner syndrome, associated with transiently positive antiphospholipid antibodies.