Duplication of the superficial femoral artery diagnosed primarily on the basis of color Doppler ultrasonography.

Variations of the lower extremity venous system are common, and radiologists may frequently be confronted with such variations during daily clinical practice. However, variations in the arterial system of the lower extremity are extremely rare. The profunda femoris artery and arteries of the cruris are mainly subject to variation. This report describes an extremely rare arterial variation, duplication of the superficial femoral artery (SFA), in terms of the radiologic findings, clinical importance, and embryologic basis.