Lymphoedema is fluid retention in the tissue caused by damage to the lymphatic system and is one of the most serious side-effects of cancer operations. The problems caused by the swelling can range from severe pain or skin infections right through to loss of limb function and they detract greatly from a patient’s quality of life. The conventional forms of treatment are only partially effective and the results temporary. Researchers are now refining two innovative techniques for the effective treatment of lymphoedema.