When we hear of a woman who has been diagnosed with cancer, most of us tend to assume it is breast cancer.  Part of this is the fact breast cancer gets a lot of media exposure compared to other forms of cancer.  But for women in the United States, with the exception of skin cancer, breast cancer is the most commonly diagnosed cancer among American women and according to BreastCancer.org, for 2017 it is estimated that about 30% of cancers diagnosed in women will be breast cancer.