Using Thermography in the Diagnostics of Lymphedema: Pilot Study

The aim of the study was to evaluate the usefulness of thermography in the diagnosis of lymphedema. The study included 43 women after axillary dissection caused by breast cancer, whose mean age was 64.4 ± 7.8 years. The subjects were divided into two groups, with the criterion for division being the appearance of secondary lymphedema. The size of lymphedema was verified by Limb Volumes Professional 5.0; body surface temperatures were registered using a thermal camera. In the control group, the difference in the volume of the limb on the operated side and the contralateral limb was 7.5 ± 77.7 mL (3.6%). The temperature on the nonoperated side tended to be higher than on the opposite side. In the test group, the difference in size between the limbs was 54.5 ± 312.7 mL (29.3%). In the case of mild or moderate edema, a reverse tendency was observed. While measuring the difference in the mean surface temperatures of both limbs belonging to two groups, a significance of differences at the level of p = 0.04 was observed. Moreover, a negative Spearman correlation coefficient (-0.34) was observed between the size of secondary lymphedema and the surface temperature. Noninvasive thermography can provide a valuable supplementary tool in the diagnostics of secondary lymphedema.