Summary
Results from epidemiologic and related studies of non-contraceptive estrogens and breast cancer are reviewed. Exogenous estrogens in high doses can enhance the risk of breast cancer. Moderate use of estrogens for menopausal symptoms probably has little effect on risk, but long-term users, and women who take high-strength preparations, appear to be at slightly increased risk. Exogenous estrogens probably reduce the protective effect of premenopausal oophorectomy, and may preferentially enhance the risk of breast cancer in women with some types of benign breast disease, although data from some studies do not support these conclusions. There is no evidence that the influence on risk of breast cancer is different for synthetic and conjugated estrogens. Needs for reanalyses of data from existing studies, and for additional investigations, are summarized.
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Thomas DB: Epidemiologic and related studies of breast cancer etiology.In AM Lilienfeld (ed): Reviews in Cancer Epidemiology, Vol 1. Elsevier/North-Holland 1980, pp 153–217
Greenwald P, Caputo T, Wolfgang P: Endometrial cancer after menopausal use of estrogens. Obstet Gynecol 50:239–243, 1977
Weiss NS: Menopausal estrogens and endometrial cancer.In Silverberg and Major (eds): Estrogens and Cancer. John Wiley & Sons, 1978, pp 27–34
Logan WPD: Cancer of the female breast. International mortality trends. World Health Statistics Report 28:232–251, 1975
Pollack ES, Horm JW: Trends in cancer incidence and mortality in the United States, 1969–76. J Natl Cancer Inst 64:1091–1103, 1980
Boston Collaborative Drug Surveillance Program: Surgically confirmed gallbladder disease, venous thromboembolism, and breast tumors in relation to postmenopausal estrogen therapy. N Engl J Med 290:15–18, 1974
Craig TJ, Comstock GW, Geiser PB: Epidemiologic comparison of breast cancer patients with early and late onset of malignancy and general population controls. J Natl Cancer Inst 53:1577–1581, 1974
Casagrande J, Gerkins V, Henderson BE, Mack T, Pike MC: Brief communication: Exogenous estrogens and breast cancer in women with natural menopause. J Natl Cancer Inst 56:839–841, 1976
Sartwell PE, Arthes FG, Tonascia JA: Exogenous hormones, reproductive history, and breast cancer. J Natl Cancer Inst 59:1589–1592, 1977
Ravnihar B, Seigel DG, Lindtner J: An epidemiologic study of breast cancer and benign breast neoplasias in relation to the oral contraceptive and estrogen use. Europ J Cancer 15:395–405, 1979
Jick H, Walker AM, Watkins RN, D'Ewart DC, Hunter JR, Danford A, Madsen S, Dinan BJ, Rothman KJ: Replacement estrogens and breast cancer. Am J Epidemiol 112:586–594, 1980
Ross RK, Paganini-Hill A, Gerkins VR, Mack TM, Pfeffer R, Arthur M, Henderson BE: A case-control study of menopausal estrogen therapy and breast cancer. JAMA 243:1635–1639, 1980
Brinton LA, Hoover RN, Szklo M, Fraumeni JF: Meno-pausal estrogen use and risk of breast cancer. Cancer 47:2517–2522, 1981
Hoover R, Glass A, Finkle WD, Azevedo D, Milne K: Conjugated estrogens and breast cancer risk in women. J Natl Cancer Inst 67:815–820, 1981
Kelsey JL, Fischer DB, Holford TR, LiVolsi VA, Mostow ED, Goldenberg IS, White C: Exogenous estrogens and other factors in the epidemiology of breast cancer. J Natl Cancer Inst 67:327–333, 1981
Burch JC, Byrd BF, Vaughn WK: The effects of long-term estrogen on hysterectomized women. Am J Obstet Gynecol 118:778–782, 1974
Byrd BF, Burch JC, Vaughn WK: The impact of long term estrogen support after hysterectomy. A report of 1016 cases. Ann Surg 185:574–580, 1977
Hoover R, Gray LA, Cole P, MacMahon B: Menopausal estrogens and breast cancer. N Eng J Med 295:401–405, 1976
Beral V, Colwell L: Randomised trial of high doses of stilboestrol and ethisterone in pregnancy: long-term followup of mothers. Br Med J 281:1098–1101, 1980
Bibbo M, Haenszel WM, Wied GL, Hubby M, Herbst AL: A twenty-five-year follow-up study of women exposed to diethylstilbestrol during pregnancy. N Engl J Med 298:763–767, 1978
Brain DD, Tilley BC, Labarthe DR, O'Fallon WM, Noller KL, Kurland LT: Breast cancer in DES-exposed mothers. Absence of association. Mayo Clin Proc 55:89–93, 1980
Symmers WS: Carcinoma of the breast in transsexual individuals after surgical and hormonal interference with the primary and secondary sex characteristics. Br Med J 2:82, 1968
Moolgavkar SH, Day NE, Stevens RG: Two-stage model for carcinogenesis: epidemiology of breast cancer in females. J Natl Cancer Inst 65:559–569, 1980
Thomas DB, Persing JP, Hutchinson WB: Exogenous estrogens and other risk factors for breast cancer in women with benign breast diseases. J Natl Cancer Inst (in press).
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Address for Reprints: David B. Thomas, M.D., Dr.P.H., Program in Epidemiology and Biostatistics, Fred Hutchinson Cancer Research Center, 1124 Columbia Street, Seattle, WA 98104, USA.
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Thomas, D.B. Non-contraceptive exogenous estrogens and risk of breast cancer: A review. Breast Cancer Res Tr 2, 203–211 (1982). https://doi.org/10.1007/BF01806932
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DOI: https://doi.org/10.1007/BF01806932