Abstract
Reflux in the GSV due to sapheno-popliteal incompetence associated with ascending (paradoxical) reflux in the Giacomini vein is a rare but well described pattern of reflux. Treatment of this type of reflux is controversial and only surgical treatment has been described. We describe 2 patients in whom this type of reflux was successfully abolished following endovenous laser ablation (EVLA) of the GSV with the SPJ and Giacomini vein regaining competency. Paradoxical reflux in the Giacomini vein and SPJ is secondary to GSV incompetence which exerts a syphon effect. EVLA of the refluxing segment of GSV interrupts this effect and prevents the paradoxical reflux at the SPJ.
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