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Screening mammography: sensitivity and specificity in relation to hormone replacement therapy
E L Thurfjell1, L H Holmberg, I R Persson
1Department of Diagnostic Radiology, University Hospital, Uppsala, Sweden.
Radiology
|May 1, 1997
Summary
Hormone replacement therapy (HRT) does not reduce screening mammography sensitivity in women. However, HRT may slightly decrease mammogram specificity, particularly with certain regimens and longer treatment durations.
Area of Science:
- Radiology
- Oncology
- Endocrinology
Background:
- Screening mammography is crucial for early breast cancer detection.
- Hormone replacement therapy (HRT) is commonly used by postmenopausal women.
- The impact of HRT on mammographic accuracy requires thorough investigation.
Purpose of the Study:
- To assess the effects of hormone replacement therapy (HRT) on screening mammography's sensitivity and specificity.
- To determine if HRT use influences the diagnostic performance of mammograms.
Main Methods:
- A study involving 20,000 women aged 50+ undergoing screening mammography.
- Categorization of participants based on HRT use: current users, previous users, and never users.
- Mammographic views (one-view or two-view) were determined by breast tissue composition.
Main Results:
- Mammography sensitivity remained high across all HRT groups (current users: 96%, previous users: 92%, never users: 91%).
- Specificity was also high, ranging from 94% to 95% across groups.
- A slight decrease in specificity was observed with longer HRT duration and specific continuous combined estradiol-progestin regimens.
Conclusions:
- Screening mammography sensitivity is not compromised by current HRT use.
- A marginal decrease in mammographic specificity may occur, influenced by HRT regimen and treatment duration.
- These findings aid in interpreting mammograms for women on HRT.