Doctors have tools to help estimate a woman’s personal risk, but women who get breast cancer sometimes have no known risk factors besides age. Many women with one or more risk factors never get breast cancer. So it’s impossible to know who will actually get the disease.
Read Know your breast cancer risks, HerkimerTelegram, Oct 2011
DES exposure is one of many risks factors for breast cancer – Be aware of these risks factors and stay tuned via Diethylstilbestrol, Journal of a DES Daughter 
DES studies on cancer and breast cancer, screening.