Lymphedema is identified with upper limb volume measurements eg circumference measurements, water displacement and perometer. Bioimpedance spectroscopy can also be used to assess the extracellular fluid. A 10% limb volume change has been reported as the most accurate threshold to diagnose lymphedema. However, with this definition an underestimation of the incidence rate of lymphoedema is made. Therefore, recently a threshold of 5% limb volume change is proposed.