This document summarizes information about breast cancer including types, risk factors, symptoms, screening and diagnostic tests, staging, treatment options, and prevention strategies. It discusses the main types of breast cancer such as ductal carcinoma, lobular carcinoma, and inflammatory breast cancer. Risk factors include family history, dense breast tissue, age of starting menstrual periods, and breast radiation. Screening involves breast exams, mammograms, ultrasounds and MRIs. Treatment depends on cancer stage and includes surgery, radiation, hormone therapy, chemotherapy and targeted drug therapy. Prevention focuses on screening, diet, exercise, breastfeeding and limiting alcohol.