Commentary

A Perfect Storm: Patterns of care


 

References

Editor’s Note: This is the third installment of a five-part monthly series that will discuss the pathologic, genomic, and health system factors that contribute to the racial survival disparity in breast cancer. The series, which is adapted from an article that originally appeared in CA: A Cancer Journal for Clinicians 1, a journal of the American Cancer Society, will also review exciting and innovative interventions to close the survival gap. This month’s column reviews patterns of care – the second element in the perfect storm.

Mammography

Despite advances in breast cancer imaging technology, the mainstay of breast cancer screening has remained mammography. Chu et al. 2 found that African American women have less early-stage disease in every age group for each hormone receptor status, and this raises the concern that mammography screening might be inadequate in this population. Although historically, African American women used mammography less than did white women, this difference has fortunately disappeared with time. 3 According to results from the 2010 National Health Interview Survey , among women who were 40 years or older, 50.6% of non-Hispanic African Americans and 51.5% of non-Hispanic whites reported having had a mammogram within the past year. 4

Although mammography uptake may be similar between these groups, there are still differences both in quality and in follow-up of abnormal imaging results. A study of mammography capacity and quality in a large urban setting found that the facilities that served predominantly minority women were more likely to be public institutions (31% vs. 0%) and less likely to be academic (27% vs. 71%), less likely to have digital mammography (18% vs. 71%), and less likely to have dedicated breast imaging specialists reading the films (23% vs. 87%). The authors concluded that the mammography process was broken, with quality differences in the manner in which the centers provided care and reported results. 5

The accompanying graphic illustrates the disparities seen in breast cancer mammography and care for women in underserved communities on Chicago’s South Side. As the figure demonstrates, there are fewer mammography centers on the city’s South Side, with the concentration of breast cancer imaging and treatment resources localized in the more affluent communities of central and northern Chicago. A total of 300,000 women who were eligible for screening went unscreened because of improper management of resources.

Highlighting the importance of location in breast cancer care, Gehlert et al. 6 asserted that ensuring that inner-city health facilities have up-to-date, well-maintained equipment and that mammographers have access to continuing training and opportunities for consultation should help reduce breast cancer mortality in African Americans.

With respect to follow-up of abnormal imaging results, a large retrospective cohort study of 6,722 women with abnormal mammogram results seen at a New York academic medical center from January 2002 through December 2002 found longer times to diagnostic follow-up for African American versus white women. The median number of days to diagnostic follow-up was 20 for African American patients versus 14 for white patients. In addition, racial disparities remained significant after the researchers controlled for age, Breast Imaging Reporting and Data System ( BI-RADS) category, insurance status, provider practice location, and median household income. More important, in women with a BI-RADS classification of 4 or 5 – signifying a lesion seen on mammography that is either suspicious for or highly suggestive of malignancy, respectively – the median number of days to follow-up among those without same-day additional imaging was 26 for African Americans and 14 for whites ( P < .05). 7

Delays in treatment

A cascade of delays also has been documented in breast cancer care for African American women. Silber et al. 8 investigated factors associated with differences in breast cancer outcomes in a large population-based study using Surveillance, Epidemiology, and End Results ( SEER)-Medicare data. The mean time from diagnosis to treatment was 29.2 days for African Americans versus 22.5 days for whites ( P < .001). The authors also found that African Americans were more likely to have very-long treatment delays. At least 6% of African Americans did not initiate treatment within the first 3 months of diagnosis, whereas only 3% of whites failed to start treatment ( P < .001). Gwyn et al. 9 also found potentially clinically significant treatment delays more often for African American women than for white women. The time from medical consultation to the initiation of treatment was longer than 3 months for 22.4% of African American women versus 14.3% of white women. Three months was chosen as

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