Breast cancer is the most common invasive cancer, affecting 12% of women worldwide. Some of the risk factors contributing to the incidence of this disease are obesity, alcohol consumption, hormone replacement therapy, lack of physical exercise, etc. Between 5-10% of breast cancer cases are attributed to genetics. Breast cancers are easy to diagnose through a biopsy or a microscopic analysis of the affected area of the breast. Its treatment can be a multidisciplinary procedure involving surgical and non-surgical modalities. The tumor is removed surgically along with the surrounding tissue, and one or more lymph nodes may also be biopsied. For someone with high risk factors, medications such as raloxifene or tamoxifen may be used to prevent this disease. The topics covered in this extensive book deal with the clinical aspects of breast cancer. The aim of this book is to present researches that have transformed this domain and aided its treatment and management. The readers would gain knowledge that would broaden their perspective about breast cancer.