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Smoking and high-risk mammographic parenchymal patterns: a case-control study
1Department of Community Medicine, Strangeways Research Laboratory, Worts Causeway, Cambridge, CB1 8RN, UK. evis.sala@srl.cam.ac.uk
Breast Cancer Research : BCR
|November 1, 2000
Summary
Current smoking is linked to lower odds of high-risk mammographic patterns. This suggests smoking may influence breast cancer risk assessment, acting as a key confounder in studies.
Area of Science:
- Oncology
- Radiology
- Epidemiology
Background:
- Mammographic parenchymal patterns are associated with breast cancer risk.
- Smoking is a known risk factor for various cancers, including breast cancer.
- The relationship between smoking and mammographic patterns requires further elucidation.
Purpose of the Study:
- To investigate the association between current and past smoking and mammographic parenchymal patterns.
- To determine if smoking acts as a confounder in the relationship between mammographic patterns and breast cancer risk.
Main Methods:
- Retrospective analysis of mammographic data and smoking history.
- Statistical adjustments for known breast cancer risk factors.
- Stratified analysis for postmenopausal women.
Main Results:
- Current smoking showed a strong inverse association with high-risk mammographic patterns.
- Current smokers were significantly less likely to have high-risk patterns compared to never smokers.
- Past smoking was not significantly associated with mammographic patterns.
Conclusions:
- Current smoking status is an important factor to adjust for when assessing mammographic patterns and breast cancer risk.
- Smoking may act as a significant confounder for other risk factors, such as obesity-related variables.
- Mammographic patterns may serve as a biomarker for the impact of smoking on breast cancer risk.