Vascularized lymph vessel transplant (VLVT): our experience and lymphedema treatment algorithm

Supermicrosurgical lymphaticovenicular anastomosis (LVA) and vascularized lymph node transplant (VLNT) are established surgical procedures for fluid-predominant extremity lymphedema. LVA is most effective for early disease, while VLNT is effective for more advanced lymphatic injury. However, the devastating complication of donor-site lymphedema has been reported following VLNT. Contour deformity caused by the bulky VLNT flaps further decreases the appeal of this procedure. Vascularized lymph vessel transplant (VLVT) has emerged as a promising new alternative to VLNT. This novel technique has challenged the accepted belief that incorporation of lymph nodes (LNs) into a flap is necessary for the physiologic treatment of advanced lymphedema. First described with the first dorsal metatarsal artery (FDMA) flap, the superficial circumflex iliac artery perforator (SCIP) and thoracodorsal artery perforator (TDAP) flaps were later on described as additional options for VLVT. Outcomes of VLVT have been found to be mostly equivalent to those of VLNT in alleviating symptoms and improving quality of life (QoL). By not sacrificing LNs, it theoretically reduces donor site morbidity. To date, donor-site lymphedema as a sequela of VLVT harvest has not been reported. As with other modalities for the treatment of lymphedema, an understanding of the progression of this disease and careful patient selection is imperative for the successful implementation of VLVT. A review of the literature, combined with the senior author’s experience with these novel techniques, was utilized to generate an updated algorithm for the surgical treatment of extremity