Femoral vein

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Left femoral vein within the femoral triangle.

The continuation of the popliteal vein as it passes through the upper margin of the popliteal fossa, carrying blood from the lower limb back towards the inferior vena cava. The femoral vein is joined by the profunda femoris vein to form the common femoral vein. The inguinal ligament marks the transition from femoral vein to external iliac vein.

The use of the term superficial femoral vein to describe the femoral vein between the popliteal fossa and the confluence of the profunda femoris vein is deprecated.[1] This may cause confusion amongst more ignorant physicians, who may decide not to treat a femoral vein thrombosis on the erroneous basis that it is a 'superficial' vein.[2][3]

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