Fig. 1From: May–Thurner syndrome, a diagnosis to consider in young males with no risk factors: a case report and review of the literatureAbsent Doppler flow within an occlusive thrombus-filled (arrow) left external iliac vein (a). Non-compressive occlusive thrombus (arrow) within the left common femoral, femoral, and fibular veins (b–d respectively)Back to article page