Abstract
PURPOSE OF REVIEW: Breast cancer disparities that exist between high-income countries (HIC) and low- and middle-income countries (LMICs) are also reflected within population subgroups throughout the United States (US). Here we examine three case studies of US populations "left behind" in breast cancer outcomes/equity. RECENT FINDINGS: African Americans in Chicago, non-Latina White women in Appalachia, and Latinas in the Yakima Valley of Washington State all experience a myriad of factors that contribute to lower rates of breast cancer detection and appropriate treatment as well as poorer survival. These factors, related to the social determinants of health, including geographic isolation, lack of availability of care, and personal constraints, can be addressed with interventions at multiple levels. SUMMARY: Although HICs have reduced mortality of breast cancer compared to LMICs, there remain inequities in the US healthcare system. Concerted efforts are needed to ensure that all women have access to equitable screening, detection, treatment, and survivorship resources.