The lymphatic bed of the skin and subcutaneous tissues of the lower leg from 20 operated patients was studied by light and electron microscopy and by phlebographic methods. Three stages of development of the disease were examined: without complicated form of varicose veins, complicated form, and postthrombophlebitic syndrome. Morphological features of the state of the lymphatic bed of the skin, subcutaneous connective tissue and fascia of the lower leg in the initial stage of disease show fine structure changes of lymphatic vessels and capillary walls interpreted as a compensation phenomenon. It seems that the structure alterations of endotheliocytes of lymphatic capillaries and the connective tissue surrounding them found in this study in the complicated form of the disease and the postthrombophlebitic syndrome are the basis of the mechanism of transport-resorption insufficiency of the lymph vessels’ terminal flow path