Monday, March 1, 2021

Lymph Node to Vein Anastomosis (LNVA) for lower extremity lymphedema

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J Plast Reconstr Aesthet Surg. 2021 Jan 30:S1748-6815(21)00048-6. doi: 10.1016/j.bjps.2021.01.005. Online ahead of print.

ABSTRACT

The microsurgical options for lower limb lymphedema is a challenge. In search to improve the overall result, we hypothesized it would be beneficial to add the functioning lymph nodes to vein anastomosis (LNVA) in addition to lymphovenous anastomosis (LVA). This is a retrospective study of 160 unilateral stage II & III lower extremity lymphedema comparing the outcome between the LNVA + LVA group and the LVA only group from May 2013 to June 2018. MRI was used to identify the functioning lymph nodes. Patient outcome, including lower extremity circumference, body weight, bio impedance test, and other data were analyzed to evaluate whether lymph nodes to vein anastomosis (LNVA) improved outcome. The LNVA + LVA group showed significantly better results for circumference reduction rate, body weight reduction r ate, and extracellular fluid reduction rate of the affected limb as compared to the LVA only group for both stage II and III lymphedema. The MRI imaging revealed that 9 cases had no identifiable lymph nodes of the affected limb and 54 cases with a nonfunctioning lymph node upon exploration despite positive imaging. Correlation showed the lymph node size needed to be at least 8 mm in the MRI to be functional. The LNVA + LVA approach for lymphedema has the benefit of better reduction as compared to LVA alone in the lower limb as well as the suprapubic region. Preoperative MRI will help to identify the functioning lymph node by increasing the overall probability of positive outcome.

PMID:33640308 | DOI:10.1016/j.bjps.2021.01.005

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