After your diagnosis, you will be bombarded with medical information. Trying to make sense of it while you are too upset to even think of treatment in a rational way is difficult. This chapter will explain breast cancer and some of the medical information that is given to you during the initial diagnosis. The more you learn, the more you realize that breast cancer is not just one diagnosis with one treatment choice, and you also can't compare one breast cancer situation to another. This section touches on the key elements that help you and your doctor make treatment choices. Knowledge is power and with that power comes the ability to make better treatment decisions.