Endovenous Thermal Ablation of Recurrent Varicose Veins due to Residual Great Saphenous Venous Insufficiency After Saphenous Venous Surgery: A Comparative Study.

BACKGROUND Redo surgery for recurrent varicose veins of the great saphenous vein (GSV) is technically more challenging than the initial surgery. OBJECTIVE To compare 980 and 1,470-nm endovenous laser ablation (EVLA) and radiofrequency ablation (RFA) for the treatment of residual GSV insufficiency after saphenofemoral ligation 6 stripping. MATERIALS AND METHODS Thirty-seven limbs in 29 patients with recurrent varicose veins were retrospectively evaluated. Patients were divided into 3 groups: 980-nm EVLA (group A), 1,470-nm EVLA (group B), and RFA (group C). Duplex ultrasonography, Venous Clinical Severity Score (VCSS), and adverse events were examined at intervals of 1 week, 1, 3, 6, and 12 months. RESULTS Complete closure was achieved in 35 (94.6%) limbs at 12 months. Venous Clinical Severity Score decrease in group C (3.6 +/- 0.5) was significantly (p<.017) greater compared with that of group A (2.6 +/- 0.9). Ecchymosis grade was significantly (p<.017) lower in group C (0.1 +/- 0.3) than that in group A (1.6 +/- 1.5). CONCLUSION Endovenous thermal ablation using EVLA or RFA is safe and effective for treatment of recurrent varicose veins resulting from residual GSV insufficiency after saphenous venous surgery. The RFA is superior to 980-nm EVLA in terms of postprocedural ecchymosis and improvement in VCSS.