Greater saphenous vein anomaly and aneurysm with subsequent pulmonary embolism

Venous aneurysms often present as painful masses. They can present either in the deep or superficial venous system. Deep venous system aneurysms have a greater risk of thromboembolism. Though rare, there have been case reports of superficial aneurysms and thrombus causing significant morbidity such as pulmonary embolism. We present a case of an anomalous greater saphenous vein connection with an aneurysm and thrombus resulting in a pulmonary embolism. This is the only reported case of an anomalous greater saphenous vein connection with aneurysm and thrombus, which eventually led to a pulmonary embolism. Recognition of the morbidity and mortality associated with superficial venous aneurysms can help prevent catastrophic outcomes such as pulmonary embolism. Surgical intervention on large symptomatic superficial venous aneurysms may be the optimal treatment in preventing unwanted complications compared to anticoagulation alone.