Istanbul Onkoloji Hospital is an oncology hospital mainly specialised in breast services. More than 70% of the treated patients are breast cancer patients. Also, lung cancer, gynaecological cancer, melanoma and endocrine surgery service is provided. As the system is mainly based on breast cancer treatment, the hospital is the unique hospital that serves breast cancer patients with 100% dedicated breast radiologist, breast pathologist and breast surgeon. The medical oncology unit is certified by the local authority to perform day and hospitalised service. The radiation oncology unit is working with two linear accelerator devices, IMRT, IGRT and all types of planning also for metastasis is available.