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European Radiology

, Volume 22, Issue 12, pp 2641–2647 | Cite as

Impact of menopausal status on background parenchymal enhancement and fibroglandular tissue on breast MRI

  • Valencia KingEmail author
  • Yajia Gu
  • Jennifer B. Kaplan
  • Jennifer D. Brooks
  • Malcolm C. Pike
  • Elizabeth A Morris
Breast

Abstract

Objective

To evaluate the effect of menopausal status on the background parenchymal enhancement (BPE) and amount of fibroglandular tissue (FGT) on breast MRI.

Methods

Retrospective review identified 1,130 women who underwent screening breast MRI between July and November 2010. In 28 of these women, breast MRI was performed both at one time point while pre- and one time point while post-menopausal (median interval 49 months). Two independent readers blinded to menopausal status used categorical scales to rate BPE (minimal/mild/moderate/marked) and FGT (fatty/scattered/heterogeneously dense/dense). Consensus was reached when there was disagreement. The sign test was used to assess changes in rating categories, and the Spearman rank and Fisher’s exact tests were used to measure correlations and associations between variables.

Results

Significant proportions of women demonstrated decreases in BPE and FGT on post-menopausal breast MRI (P = 0.0001 and P = 0.0009). BPE category was unchanged in 39 % (11/28) and decreased in 61 % (17/28) of women. FGT category was unchanged in 61 % (17/28) and decreased in 39 % (11/28) of women. Age, reason for menopause, or interval between MRIs had no significant impact on changes in BPE and FGT.

Conclusion

On MRI, BPE, and FGT decrease after menopause in significant proportions of women; BPE decreases more than FGT.

Key Points

• On MRI, background parenchymal enhancement and fibroglandular tissue both decrease after menopause.

• The reduced postmenopausal enhancement is more marked in parenchyma than fibroglandular tissue.

• Background enhancement and fibroglandular tissue seen on MRI are under hormonal influence.

Keywords

Breast MRI Enhancement Fibroglandular tissue Menopause 

Abbreviations

BPE

background parenchymal enhancement

FGT

fibroglandular tissue

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Copyright information

© European Society of Radiology 2012

Authors and Affiliations

  • Valencia King
    • 1
    • 5
    Email author
  • Yajia Gu
    • 3
    • 4
  • Jennifer B. Kaplan
    • 1
  • Jennifer D. Brooks
    • 2
  • Malcolm C. Pike
    • 2
  • Elizabeth A Morris
    • 1
  1. 1.Department of Radiology, Breast Imaging SectionMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  2. 2.Department of Epidemiology and BiostatisticsMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  3. 3.Department of RadiologyFudan University Shanghai Cancer CenterShanghaiChina
  4. 4.Department of Oncology, Shanghai Medical CollegeFudan UniversityShanghaiChina
  5. 5.Department of RadiologyMemorial Sloan-Kettering Cancer CenterNew YorkUSA

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