Breast cancer is the most common malignant tumor in women in the world, but also in Croatia. It is very important to early detect the cancer and to make a diagnostic procedures that guide you to correct and timely treatment. The most common methods of breast cancer treatment are: surgical therapy, radiotherapy, chemotherapy, hormone therapy and immunotherapy and/or combination of these, physiotherapy, and complete rehabilitation treatment. Physiotherapy plays an important role in post-operative phases for the treatment of lymphedema and returning the functionality of the operated hand. In private practice of physical therapy in Zaprešić, a study was conducted to show the effect of decongestive therapy on reducing lymphatic edema in patients after mastectomy. The treatment lasted for 2 weeks and included therapy for lymphedema, banding, therapeutic exercise, therapy training and education for home base. Estimation of circularity measures was done before and after treatment with instruments. The results of the study showed a positive effect of complete decongestive therapy treatment on the reduction of lymphatic edema at the end of two weeks treatment. The decongestive therapy has positive effect on physical, emotional and psychological aspects, which represents a significant contribution to altogether rehabilitation and quality of life of these patients. This is of particular importance for the patient's return to the routine of daily life and re-employment and other duties.