3Kierownik: dr n. med. r. Hansdorfer-Korzon Breast cancer often requires combined oncologic treatments, the base of which is surgery. Quality of life (QoL) after each surgical procedure may influence the process of decision making among women, who qualify for multiple oncological strategies. our knowledge about QoL in breast cancer patients is derived from comparative studies. Results may differ, depending on country, culture, and societal relations. the aim of the study was to investigate the quality of life of Polish patients treated with breastconserving therapy (BCT) or mastectomy with breast reconstruction. material and methods. The study involved women who underwent surgery for breast cancer in the Department of Surgical oncology of the Gdynia oncology Center from September 2010 to November 2013. Eighty-two breast reconstructions (in 79 patients) and 226 BCT procedures were performed. QoL was measured with the use of EoRTC QLQ-C30 and QLQ-BR23 questionnaires. Results. Global QoL was high in both groups and did not differ significantly. Body image was slightly better after BCT than after mastectomy with breast reconstruction, but sexual QoL was lower. Future perspective was quite low in both groups. Disease symptoms were not bothering. conclusions. The global QoL among Polish breast cancer patients treated with BCT or mastectomy with breast reconstruction is high and does not differ between groups. There is a need for anxiety and disease-related fear prophylaxis and for the improvement of sex life of breast cancer survivors.