Changes in Wolfe mammographic patterns with aging

Area of Science:

• Radiology
• Mammography
• Breast Imaging

Background:

• Wolfe mammographic patterns classify breast tissue density.
• Age is a known factor influencing breast tissue composition.

Purpose of the Study:

• To investigate age-related changes in Wolfe mammographic patterns.
• To determine if the DY pattern evolves with increasing age.

Main Methods:

• Retrospective analysis of mammograms from 212 women.
• Comparison of mammographic patterns at a mean interval of 15 years.
• Correlation of pattern changes with patient age.

Main Results:

• The DY pattern frequently transitioned to P2 or P1 patterns with advancing age.
• Younger women (mean age 47) were more likely to retain the DY pattern.
• Women with DY to P2 or P1 transitions were older (mean ages 57 and 55, respectively).
• A DY to N1 transition occurred in younger women (mean age 42).

Conclusions:

• Findings support the hypothesis that perilobular connective tissue influences the DY pattern.
• This tissue's activity peaks during the reproductive years (15-45) and declines later.
• Age-related regression of connective tissue likely explains the observed mammographic pattern shifts.