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Hormone replacement therapy and breast cancer
1Breast Unit, Guy's Hospital, London, UK.
International Journal of Clinical Practice
|June 13, 1998
Summary
Hormone replacement therapy (HRT) increases breast cancer risk similarly to aging. Long-term HRT use raises breast cancer incidence but does not increase mortality, potentially improving prognosis and reducing relapse risk.
Area of Science:
- Oncology
- Endocrinology
- Women's Health
Background:
- Hormone replacement therapy (HRT) is commonly used for menopausal symptoms.
- The relationship between HRT and breast cancer risk requires ongoing investigation.
Purpose of the Study:
- To evaluate the impact of HRT on breast cancer incidence and mortality.
- To assess the effect of long-term HRT use on breast cancer prognosis and relapse.
Main Methods:
- The study analyzed data on HRT use and breast cancer outcomes.
- Risk assessment included comparisons with aging-related risk factors.
Main Results:
- Annual breast cancer risk increase from HRT is comparable to aging.
- More than 10 years of HRT use is associated with a 35% increased risk of breast cancer incidence.
- HRT use did not elevate breast cancer-specific mortality.
- Some HRT formulations may decrease relapse risk in breast cancer patients.
Conclusions:
- While long-term HRT increases breast cancer incidence, it does not worsen survival.
- Careful consideration of HRT use is warranted, with potential benefits for some patients, including reduced relapse risk.