Dataset Information

The effect of change in body mass index on volumetric measures of mammographic density.

ABSTRACT:

Background

Understanding how changes in body mass index (BMI) relate to changes in mammographic density is necessary to evaluate adjustment for BMI gain/loss in studies of change in density and breast cancer risk. Increase in BMI has been associated with a decrease in percent density, but the effect on change in absolute dense area or volume is unclear.

Methods

We examined the association between change in BMI and change in volumetric breast density among 24,556 women in the San Francisco Mammography Registry from 2007 to 2013. Height and weight were self-reported at the time of mammography. Breast density was assessed using single x-ray absorptiometry measurements. Cross-sectional and longitudinal associations between BMI and dense volume (DV), non-dense volume (NDV), and percent dense volume (PDV) were assessed using multivariable linear regression models, adjusted for demographics, risk factors, and reproductive history.

Results

In cross-sectional analysis, BMI was positively associated with DV [β, 2.95 cm(3); 95% confidence interval (CI), 2.69-3.21] and inversely associated with PDV (β, -2.03%; 95% CI, -2.09, -1.98). In contrast, increasing BMI was longitudinally associated with a decrease in both DV (β, -1.01 cm(3); 95% CI, -1.59, -0.42) and PDV (β, -1.17%; 95% CI, -1.31, -1.04). These findings were consistent for both pre- and postmenopausal women.

Conclusion

Our findings support an inverse association between change in BMI and change in PDV. The association between increasing BMI and decreasing DV requires confirmation.

Impact

Longitudinal studies of PDV and breast cancer risk, or those using PDV as an indicator of breast cancer risk, should evaluate adjustment for change in BMI.

SUBMITTER: Hart V

PROVIDER: S-EPMC4633314 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature

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Publications

The effect of change in body mass index on volumetric measures of mammographic density.

Hart Vicki V Reeves Katherine W KW Sturgeon Susan R SR Reich Nicholas G NG Sievert Lynnette Leidy LL Kerlikowske Karla K Ma Lin L Shepherd John J Tice Jeffrey A JA Mahmoudzadeh Amir Pasha AP Malkov Serghei S Sprague Brian L BL

Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 20150827 11

<h4>Background</h4>Understanding how changes in body mass index (BMI) relate to changes in mammographic density is necessary to evaluate adjustment for BMI gain/loss in studies of change in density and breast cancer risk. Increase in BMI has been associated with a decrease in percent density, but the effect on change in absolute dense area or volume is unclear.<h4>Methods</h4>We examined the association between change in BMI and change in volumetric breast density among 24,556 women in the San F ...[more]

PMID: 26315554

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Dataset Information

The effect of change in body mass index on volumetric measures of mammographic density.

Background

Methods

Results

Conclusion

Impact

Publications

The effect of change in body mass index on volumetric measures of mammographic density.

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