Lymphatic Cleansing & Stimulation. Lymphatic congestion or stagnation is a serious problem for many cancer patients. Undigested food, infectious material, dead cells, toxins, and other debris have to be carried off by the lymphatic system.Thickened and sluggish lymph results in swelling and discomfort.asically, the lymphatic system consists of one-way channels into which excess fluids, called lymph, are absorbed. This fluid consists of waste materials and some white blood cells. It is not under pressure and only moves because of exercise or muscle contraction.