Breast cancer forms in the breast tissue. There are several types including ductal, lobular, and inflammatory breast cancer. Breast cancer is staged based on tumor size and spread. Stage I is a small tumor contained in the breast while stage IV cancer has spread beyond the lymph nodes. Diagnosis involves mammography, breast ultrasound, and biopsy. Treatment options include radiation therapy, chemotherapy, hormone therapy, and targeted therapies like Herceptin. Chemotherapy can have side effects but works throughout the body to target any cancer cells that may have spread. Alternative medicines may help reduce breast cancer risk or toxicity of standard treatments.