RESUMO
INTRODUCTION: In advanced lymphedema, lymphovenous anastomosis (LVA) can be a solution based on utilizing the pressure gradient between the high pressure lymphatics and low pressure veins. If the vein pressure in high, the effect affect surgery will be less optimal. This study evaluated the effect of axillary vein perivascular scar release on LVA. MATERIALS AND METHODS: This is a retrospective study of 40 upper limb stage 2 and 3 lymphedema patients divided into 2 groups with an average follow-up of 33 months (minimal of at least 12 months); scar-released group (n=25) and control group (n=15). All patients underwent LVA with or without lymph node transfer. Demographic data, outcome (volumetric change and bioimpedence analysis (BIA)), and major veins (axillary, basilic and cephalic) diameter changes were evaluated. RESULTS: Both groups showed significant reduction in volume and BIA parameters after LVA. The scar-released groups (24/25 with lymph node transfer and 1 without) showed statistically higher reduction of BIA analysis compared to the control group at 1, 6 and 12 months after LVA. The changes in the major veins after axilla scar release showed significant changes in all 3 veins. There was a significant correlation between cephailic vein dimeter reduction and BIA measurement. CONCLUSION: The release of perivascular scar in the axially vein may result in better outcome after LVA. This is based on the finding that scar release shows correlation between cephailic vein dimeter reduction and BIA measurement suggesting reduction of venous pressure in the peripheral vein increasing the pressure gradient between the lymphatic and venous system allowing better outflow after LVA.