Breast cancer is the most common malignancy in women in the Western world. Over the last decades, the use of postoperative systemic therapies (chemotherapy, hormonal therapy, trastuzumab) and radiotherapy led to significant survival benefits for patients with early breast cancer. Although these modalities have been extensively studied and used, a major question is how these systemic therapies are optimally sequenced with radiotherapy in the adjuvant setting. This article reviews available data on how to combine systemic therapies with radiotherapy in women with early stage breast cancer, and provides recommendations that unfortunately do not reach level I evidence due to insufficient quality of available clinical data.
BELG J MED ONCOL 2014;8(3):72–80