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Corresponding author: Cemal Kemaloglu, M.D. Turgutlu Devlet Hastanesi Kalp ve Damar Cerrahisi Klinigi, 45400 Turgutlu, Manisa, Turkey. Tel: +90 505 899 07 39 e-mail: cemalkemaloglu@hotmail.com This is the report of two cases who underwent a modified great saphenous vein (GSV) ablation for venous insufficiency. For two patients with venous insufficiency and GSV ref lux, radiofrequency (RF) ablation was scheduled. Both patients were obese and they had a ref lux time more than four seconds in erect position with Valsalva’s maneuver during color duplex ultrasound (US). Puncture for the GSV below or above the knee was unable to be performed. For both patients, a successful approach to GSV was made from the saphenofemoral junction (SFJ) at the groin level and GSV was ablated from below the knee level to the SFJ by RF.

Retrograde passage of radiofrequency catheter for the endovenous ablation of the great saphenous vein: a modified technique and report of two cases