[Research progress of combined surgical treatment of lymphedema based on vascularized lymph node transfer]

To summarize the research progress of combined surgical treatment of lymphedema based on vascularized lymph node transfer (VLNT), and to provide systematic information for combined surgical treatment of lymphedema.

Literature on VLNT in recent years was extensively reviewed, and the history, treatment mechanism, and clinical application of VLNT were summarized, with emphasis on the research progress of VLNT combined with other surgical methods.

VLNT is a physiological operation to restore lymphatic drainage. Multiple lymph node donor sites have been developed clinically, and two hypotheses have been proposed to explain its mechanism for the treatment of lymphedema. But it has some inadequacies such as slow effect and limb volume reduction rate less than 60%. To address these inadequacies, VLNT combined with other surgical methods for lymphedema has become a trend. VLNT can be used in combination with lymphovenous anastomosis (LVA), liposuction, debulking operation, breast reconstruction, and tissue engineered material, which have been shown to reduce the volume of affected limbs, reduce the incidence of cellulitis, and improve patients' quality of life.

Current evidence shows that VLNT is safe and feasible in combination with LVA, liposuction, debulking operation, breast reconstruction, and tissue engineered material. However, many issues need to be solved, including the sequence of two surgeries, the interval between two surgeries, and the effectiveness compared with surgery alone. Rigorous standardized clinical studies need to be designed to confirm the efficacy of VLNT alone or in combination, and to further discuss the subsistent issues in the use of combination therapy.