A rare anomaly of the femoral vessels: complete transposition of the femoral artery and vein.

We report the case of complete transposition of the femoral artery and vein in a 47-year-old woman submitted to high ligation of the left saphenous femoral junction (SFJ) and great saphenous vein (GSV) stripping. During the dissection, we detected that the SFJ and the common, superficial and deep femoral veins were laterally placed to the femoral artery and the GSV crossed the femoral artery bifurcation. Associated variations of the GSV, femoral artery and vein is quite rare and, despite being asymptomatic can lead to technical difficulties increasing the risk of major intraoperative complications. The knowledge of this anomaly seems to be important and its detection is usually intraoperative.