Breast cancer is the most common cancer among women in Singapore, with 7,600 new cases diagnosed in 2017-2019. Family history and the use of hormonal replacement therapy or oral contraceptives are risk factors. Regular screening and early detection are crucial for successful treatment, as early-stage breast cancer is often curable. Breast cancer surgery is a common treatment option, with options including lumpectomy and mastectomy. Other treatment options include chemotherapy, radiation therapy, and hormone therapy. The breast cancer mortality rate in Singapore has been declining, suggesting that early detection and improved treatment options have improved outcomes for breast cancer patients.