The results of the intensive phase of complete decongestive therapy and the determination of predictive factors for response to treatment in patients with breast cancer related‐lymphedema

BACKGROUND Lymphedema is a common complication of breast cancer or its treatment. The gold standard treatment for lymphedema is complete decongestive therapy. There are few studies about the predictive factors for the effectiveness of complete decongestive therapy. AIM To evaluate the results of the intensive phase of complete decongestive therapy, and to determine the predictive factors for the response to treatment in patients with breast cancer-related lymphedema. METHODS AND RESULTS Fifty-seven patients with breast cancer-related lymphedema (mean age: 56.2 ± 11.2 years) who underwent complete decongestive therapy between 2014 and 2016 were evaluated retrospectively. Extremity volume was calculated using circumferential measurements and the truncated cone formula technique. Response to treatment was evaluated using the percentage reduction of excess volume formula, which was obtained by calculating the extremity volume before and after treatment. The median percentage reduction of excess volume was 27.7% (IQR,13.6-50.3). The history of skin infection was related to lower percentage reduction of excess volume (P = 0.001). Although percentage reduction of excess volume was positively correlated with education level (r = 0.286, P = 0.031), percentage reduction of excess volume was negatively correlated with lymphedema duration (r = -0.361, P = 0.006), postoperative duration (r = -0.314, P = 0.018), percentage of excess volume (r = -0.398, P = 0.002), and number of complete decongestive therapy sessions (r = -0.436, P = 0.001). Univariate and multivariate analyses showed that the independent variables for percentage reduction of excess volume were percentage of excess volume (P = 0.009) and education level (P = 0.021). CONCLUSION Complete decongestive therapy is an effective method in patients with breast cancer related-lymphedema. The most important predictive factors for the efficacy of treatment were found as percentage of excess volume and education level. Patients with breast cancer should be followed up regularly and receive complete decongestive therapy in the early stage of lymphedema.