Paradoxical embolism, describing the passage of venous or right-sided cardiac thrombus
into the arterial or systemic circulation through patent foramen ovale, is an uncommon cause
of acute arterial occlusion. Here, we report acute Leriche syndrome in a young woman
attributable to paradoxical embolism. Ischaemia, patent foramen ovale, and venous
thrombosis were the triad of evidence for paradoxical embolism.