Estrogen replacement therapy in women with a history of proliferative breast disease. 1999

W D Dupont, and D L Page, and F F Parl, and W D Plummer, and P A Schuyler, and M Kasami, and R A Jensen
Department of Preventive Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-2637, USA.

BACKGROUND Little information is available regarding the invasive breast carcinoma risk associated with estrogen replacement therapy (ERT) in women with histories of histologically defined breast lesions. METHODS A retrospective cohort study of a consecutive series of women who underwent breast biopsies that proved to be benign between 1952-1978 was conducted. Follow-up data were obtained for 9494 women (87.6% of women eligible for follow-up). To investigate the effect of ERT on invasive breast carcinoma risk, the analysis was restricted to women with premenopausal breast disease whose follow-up extended through menopause and who did not develop premenopausal breast carcinoma. Relative risks were calculated with respect to women who took ERT but whose benign breast biopsies had neither atypical hyperplasia (AH), complex fibroadenoma (CFA), nor proliferative disease without atypia (PDWA). RESULTS During 190,845 woman-years of follow-up there were 444 confirmed cases of invasive breast carcinoma in the entire cohort. Women with a history of AH had relative risks of invasive breast carcinoma of 2.87 (95% confidence interval [95% CI], 1.3-6.3) and 2.53 (95% CI, 1.0-6.3) if they did or did not take ERT, respectively. For women with a history of CFA these risks were 1.57 (95% CI, 0.72-3.4) and 1.46 (95% CI, 0.53-4.0), respectively, whereas for women with a history of PDWA they were 1.37 (95% CI, 0.88-2.1) and 1.13 (95% CI, 0.69-1.9), respectively. CONCLUSIONS ERT does not significantly elevate the risk of invasive breast carcinoma in women with previous histologically defined benign breast disease. Therefore, ERT is not contraindicated in these women.

UI MeSH Term Description Entries
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D001941 Breast Diseases Pathological processes of the BREAST. Endocrine Breast Diseases,Breast Disease,Breast Disease, Endocrine,Breast Diseases, Endocrine,Disease, Breast,Disease, Endocrine Breast,Diseases, Breast,Diseases, Endocrine Breast,Endocrine Breast Disease
D001943 Breast Neoplasms Tumors or cancer of the human BREAST. Breast Cancer,Breast Tumors,Cancer of Breast,Breast Carcinoma,Cancer of the Breast,Human Mammary Carcinoma,Malignant Neoplasm of Breast,Malignant Tumor of Breast,Mammary Cancer,Mammary Carcinoma, Human,Mammary Neoplasm, Human,Mammary Neoplasms, Human,Neoplasms, Breast,Tumors, Breast,Breast Carcinomas,Breast Malignant Neoplasm,Breast Malignant Neoplasms,Breast Malignant Tumor,Breast Malignant Tumors,Breast Neoplasm,Breast Tumor,Cancer, Breast,Cancer, Mammary,Cancers, Mammary,Carcinoma, Breast,Carcinoma, Human Mammary,Carcinomas, Breast,Carcinomas, Human Mammary,Human Mammary Carcinomas,Human Mammary Neoplasm,Human Mammary Neoplasms,Mammary Cancers,Mammary Carcinomas, Human,Neoplasm, Breast,Neoplasm, Human Mammary,Neoplasms, Human Mammary,Tumor, Breast
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D012306 Risk The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome. Relative Risk,Relative Risks,Risk, Relative,Risks,Risks, Relative
D012307 Risk Factors An aspect of personal behavior or lifestyle, environmental exposure, inborn or inherited characteristic, which, based on epidemiological evidence, is known to be associated with a health-related condition considered important to prevent. Health Correlates,Risk Factor Scores,Risk Scores,Social Risk Factors,Population at Risk,Populations at Risk,Correlates, Health,Factor, Risk,Factor, Social Risk,Factors, Social Risk,Risk Factor,Risk Factor Score,Risk Factor, Social,Risk Factors, Social,Risk Score,Score, Risk,Score, Risk Factor,Social Risk Factor
D015331 Cohort Studies Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics. Birth Cohort Studies,Birth Cohort Study,Closed Cohort Studies,Cohort Analysis,Concurrent Studies,Historical Cohort Studies,Incidence Studies,Analysis, Cohort,Cohort Studies, Closed,Cohort Studies, Historical,Studies, Closed Cohort,Studies, Concurrent,Studies, Historical Cohort,Analyses, Cohort,Closed Cohort Study,Cohort Analyses,Cohort Studies, Birth,Cohort Study,Cohort Study, Birth,Cohort Study, Closed,Cohort Study, Historical,Concurrent Study,Historical Cohort Study,Incidence Study,Studies, Birth Cohort,Studies, Cohort,Studies, Incidence,Study, Birth Cohort,Study, Closed Cohort,Study, Cohort,Study, Concurrent,Study, Historical Cohort,Study, Incidence

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