Breast cancer is a type of cancer that develops in the cells of the breast tissue. It is one of the most common types of cancer among women worldwide, and in rare cases, it can also affect men. Breast cancer is characterized by the growth of abnormal cells that can form a lump or a mass in the breast tissue. Cancer can spread to other parts of the body if left untreated, making early detection and treatment essential for successful outcomes. Breast cancer screening and awareness programs have been successful in improving survival rates, but more research is needed to understand the causes and risk factors of the disease.