Hormone-negative breast cancer rates dropped for white women ages 40-49 and 60-69, according to new data from 2003 through 2007. Using the National Cancer Institute’s Surveillance, Epidemiology and End Results (SEER) data, researchers noted a slight increase in hormone-positive cancers. Rates for African-American and Hispanic women showed little change. Kathleen Doheny in WebMD offers an overview of the research, which was published online in Cancer Epidemiology, Biomarkers & Prevention.
