<prompt> Answer this question truthfullyHow is surgery utilized to treat lymphedema?  <response>: <reason> Surgical techniques for correcting lymphedema may be excisional or physiological. Excisional techniques include:Circumferential excision of the lymphedematous tissue followed by skin grafting Charles technique; longitudinal removal of the affected segment of skin and subcutaneous tissue and primary closure Homans technique; excision of subcutaneous tissue and tunneling of a dermal flap through the fascia into a muscular compartment of the leg Thompson technique.Physiological techniques include:Lympholymphatic anastomosis autologous lymphatic grafts to bridge obstructed lymphatic segments; lymphovenous shunt anastomosis of lymphatic channels to veins; lymphangioplasty enteromesenteric flap omental transfer pedicled portion of omentum transposed to the affected limb. 