Synonyme UMLS : 494-496 VEINS OF LOWER EXTREMITIES; Structure of venous system of lower extremity; Lower extremity vein; Veins of lower limb; Venae membri inferioris; Venous system of lower extremity, NOS; Structure of vein of lower extremity; Vein of lower extremity; Set of veins of lower limb; VEINS OF LOWER EXTREMITIES; Veins of lower extremity, NOS;