The role of the giacomini vein in preoperative mapping of lower limb varicose veins.

Background: The Giacomini vein (GV) can transfer reflux from perineal veins, tributary veins, and perforators of the thigh to the small saphenous vein (SSV). Vascular ultrasound with Doppler (VUD) is the preferred method for detecting reflux in specific veins such as the GV.

Objective: To identify GV depth and diameter, reflux in the GV, and presence of reflux in the SSV caused by the GV.