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Related Experiment Videos

Short communication: breast parenchymal patterns and their changes with age

C H van Gils¹, J D Otten, A L Verbeek

¹Department of Epidemiology, University of Nijmegen, The Netherlands.

The British Journal of Radiology

|October 1, 1995

Summary

Dense breast parenchyma, often making tumors harder to detect, is inversely related to age in screening populations. Its prevalence decreases significantly after menopause, suggesting targeted rescreening for pre-menopausal women.

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Area of Science:

Radiology
Oncology
Gerontology

Background:

Dense breast parenchyma (P2 and DY patterns) poses challenges in mass cancer screening, potentially leading to delayed diagnosis.
Previous studies suggest shorter rescreening intervals for women with dense breasts, but population prevalence and age-related changes require further investigation.

Purpose of the Study:

To determine the prevalence of dense breast parenchyma (P2 and DY) in a screening population.
To analyze the age-dependent changes in breast parenchyma density over time.
To evaluate the impact of menopausal status on breast density patterns.

Main Methods:

Analysis of mammographic data from 2581 women at their first screening examination.
Longitudinal follow-up of breast patterns for 1177 women aged 35-85 over 12 years.

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Classification of breast parenchyma using Wolfe's criteria (P2, DY, N1, P1).

Main Results:

The prevalence of dense breast parenchyma (P2 and DY) was 33% in the initial screening population.
Dense breast parenchyma showed a strong inverse correlation with age.
Over 12 years, 39% of women with dense breasts regressed to less dense patterns (N1, P1), primarily those who reached menopause.

Conclusions:

The presence of dense breast parenchyma is linked to reproductive status and diminishes post-menopause.
Findings support the hypothesis that dense breast patterns are related to the reproductive period.
Shortening rescreening intervals may be most beneficial for pre-menopausal women with dense breasts.