breast cancer and its radiotherapeutic methods

breast cancer is the most common cancer in women after skin cancer. in iran, the presentation age of this cancer is younger than the global average. there are different therapeutic methods for treatment of breast cancer and the choice of treatment depends on the stage of the disease as well as its type and characteristics. therapeutic methods include surgery, radiotherapy, and systemic therapies, each consisting of a variety of techniques. the two main surgical techniques are lumpectomy and mastectomy. the main systemic methods are biological therapy (immunotherapy), hormone therapy, and chemotherapy. radiotherapy is mainly categorized into external-beam radiotherapy and brachytherapy. in this paper, we present a brief review of the different types of breast cancer and their treatments using conventional and modern radiotherapy methods, as well as the treatment efficacy and side effects of breast radiotherapy.