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Related Experiment Video

Updated: Jul 6, 2026

Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats

Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats

Published on: October 16, 2010

Invited commentary: assessing breast density change--lessons for future studies.

¹Cancer Genetics and Epidemiology Program, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057-1465, USA. cb252@georgetown.edu

American Journal of Epidemiology

|April 4, 2008

Summary

This summary is machine-generated.

Breast density, a key breast cancer risk factor, changes with age and menopause. Understanding these changes requires considering assessment methods and potential period/cohort effects for accurate analysis.

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Area of Science:

Epidemiology
Radiology
Gerontology

Background:

Breast density is a significant predictor of breast cancer risk, with quantitative measurements being reproducible.
Most prior studies assessed breast density at a single time point, overlooking age-related and menopausal changes.

Discussion:

Evaluating breast density changes necessitates addressing assessment-related concerns and potential age-period-cohort confounds.
Factors influencing breast density have evolved significantly over the past five decades.

Key Insights:

Kelemen et al. analyzed how known breast density factors impact age-related density changes.
The study examined average age effects on breast density and variations based on exposure histories.

Outlook:

Further research should explore longitudinal breast density changes considering diverse exposure histories.
Improved understanding of breast density dynamics can refine breast cancer risk prediction models.