Breast Cancer Treatment Only lung cancer kills more women each year in the United States than breast cancer does. The American Cancer Society (ACS) estimates that over 184,000 new cases of breast cancer were diagnosed in women in 1996 (ACS Breast). Although these statistics are alarming, there are a number of treatment options available for those that are diagnosed with breast cancer. The best way to treat any disease is to prevent it. Since little is known about breast cancer, there are no established rules for prevention. The ACS recommends that women age twenty and older perform monthly breast self-exams, and it also suggests clinical examinati