Summary
The background of the relationship between female hormones and breast cancer is reviewed in terms of biological rationale (estrogen and progestin receptors in the breast tissue; cellular mitosis and turnover) and indications from epidemiology (slopes in the age curves in breast cancer incidence and mortality; association with obesity in postmenopause; serum and urine estrogen levels in various populations and breast cancer risks). In relation to postmenopausal hormonal therapy, 26 published studies are reviewed. Their data allow us confidently to exclude appreciable increases in risk for short-term duration of use (up to 5 years) in the short-medium term after stopping, while the relative risk appears elevated by 30 to 70% for long-term use. These conclusions are discussed in a broader public health perspective of cost/benefit evaluation of postmenopausal hormonal therapy, including cancer as well as cardiovascular disease and bone metabolism.
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© 1994 Springer Science+Business Media Dordrecht
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La Vecchia, C. (1994). Breast Cancer Risk in Hormone Replacement Therapy-Treated Women. In: Crosignani, P.G., Paoletti, R., Sarrel, P.M., Wenger, N.K., Meschia, M., Soma, M. (eds) Women’s Health in Menopause. Medical Science Symposia Series, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1024-2_7
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DOI: https://doi.org/10.1007/978-94-011-1024-2_7
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