A new study underscores the importance for women with a family history of breast or ovarian cancer to get genetic counseling and testing for the BRCA1 and BRCA2 genes that make them more likely to develop lethal breast or ovarian cancer, says a Northwestern Medicine oncologist.    The study, which will be published in the Sept. 1 issue of the Journal of the American Medical Association (JAMA), shows women with the gene live longer and nearly eliminate their risk of cancer by having prophylactic surgeries to remove their ovaries and fallopian tubes (salpingo-oophorectomy) or their breasts in a mastectomy. To read more.....