Prof. Dr. Csaba POLGÁR is the Director General and the Head of the Center of Radiotherapy at the National Institute of Oncology in Budapest, Hungary, where he has been practicing as a radiation oncologist for over two decades. His main research activity is focused on the radiotherapy of breast carcinoma, furthermore he was one of the pioneers implementing the new treatment paradigm of accelerated partial breast irradiation (APBI) in the management of early-stage breast cancer. Based on his scientific work in the field of breast cancer radiotherapy and brachytherapy he became an internationally recognized expert. Professor POLGÁR also holds prominent positions in both national and international professional societies. He is a university professor and the Chair of the Department of Oncology of Semmelweis University in Budapest and frequently speaks at national and international conferences.