期刊
CANCER CAUSES & CONTROL
卷 31, 期 2, 页码 105-112出版社
SPRINGER
DOI: 10.1007/s10552-019-01255-2
关键词
Breast cancer; Disparities; Hysterectomy; Oophorectomy; Survival analysis
资金
- Breast Specialized Program of Research Excellence (SPORE) Grant [P50-CA58223]
- North Carolina State University Cancer Research Fund
- Robert Wood Johnson Foundation Health Policy Research Scholars Program
- National Cancer Institute Career Development Award [NCI K01CA172717]
- National Institute on Minority Health and Health Disparities research award [NIMHD R01MD011680]
Purpose In the United States, hysterectomies and oophorectomies are frequently performed before menopause for benign conditions. The procedures are associated with reduced breast cancer-specific mortality among White women. The relationship between premenopausal gynecologic surgery and mortality in Black women with breast cancer is unknown. Methods This investigation used incident invasive cases of breast cancer from Phases 1 and 2 of the Carolina Breast Cancer Study a population-based study that recruited Black and White women in North Carolina between 1993 and 2001. Premenopausal gynecologic surgery was operationalized in three categories: no surgery; hysterectomy with bilateral oophorectomy; hysterectomy with conservation of >= 1 ovary. Mortality was ascertained using the National Death Index, last updated in 2016. Multivariable-adjusted Cox Proportional Hazard Models were used to estimate the effect of premenopausal surgery on breast cancer-specific and all-cause mortality Results Hysterectomy with bilateral oophorectomy was associated with reduced breast cancer-specific mortality (HR 0.68; 95% CI 0.49, 0.96). White and Black women had a similar reduction in breast cancer-specific mortality. (HR among white: 0.66; 95% CI 0.43, 1.02), (HR among Black: 0.67; 95% CI 0.37, 1.21). Conclusions There was a similar reduction in breast cancer-specific mortality following premenopausal, pre-diagnosis hysterectomy with bilateral oophorectomy across both Black and White women.
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