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Breast Cancer Research and Treatment

, Volume 130, Issue 3, pp 965–974 | Cite as

Childhood factors associated with mammographic density in adult women

  • Virginia LopeEmail author
  • Beatriz Pérez-Gómez
  • María Pilar Moreno
  • Carmen Vidal
  • Dolores Salas-Trejo
  • Nieves Ascunce
  • Isabel González Román
  • Carmen Sánchez-Contador
  • María Carmen Santamariña
  • Jose Antonio Vázquez Carrete
  • Francisca Collado-García
  • Carmen Pedraz-Pingarrón
  • María Ederra
  • Francisco Ruiz-Perales
  • Mercé Peris
  • Soledad Abad
  • Anna Cabanes
  • Marina Pollán
  • DDM Spain
Epidemiology

Abstract

Growth and development factors could contribute to the development of breast cancer associated with an increase in mammographic density. This study examines the influence of certain childhood-related, socio-demographic and anthropometric variables on mammographic density in adult woman. The study covered 3574 women aged 45–68 years, participating in breast cancer-screening programmes in seven Spanish cities. Based on a craniocaudal mammogram, blind, anonymous measurement of mammographic density was made by a single radiologist, using Boyd’s semiquantitative scale. Data associated with the early stages of life were obtained from a direct survey. Ordinal logistic regression and generalised linear models were employed to estimate the association between mammographic density and the variables covered by the questionnaire. Screening programme was introduced as a random effects term. Age, number of children, body mass index (BMI) and other childhood-related variables were used as adjustment variables, and stratified by menopausal status. A total of 811 women (23%) presented mammographic density of over 50%, and 5% of densities exceeded 75%. Our results show a greater prevalence of high mammographic density in women with low prepubertal weight (OR: 1.18; 95% CI: 1.02–1.36); marked prepubertal height (OR: 1.25; 95% CI: 0.97–1.60) and advanced age of their mothers at their birth (>39 years: OR: 1.28; 95% CI: 1.03–1.60); and a lower prevalence of high mammographic density in women with higher prepubertal weight, low birth weight and earlier menarche. The influence of these early-life factors may be explained by greater exposure to hormones and growth factors during the development of the breast gland, when breast tissue would be particularly susceptible to proliferative and carcinogenic stimulus.

Keywords

Mammographic density Childhood body size Perinatal factors Breast density Breast cancer Ordinal logistic models 

Notes

Acknowledgments

The authors wish to thank the participants in the DDM-Spain study for their contribution to breast cancer research. This study was supported by the Research Grant FIS PI060386 from Spain’s Health Research Fund (Fondo de Investigación Sanitaria); the EPY 1306/06 Collaboration Agreement between Astra-Zeneca and the Carlos III Institute of Health (Instituto de Salud Carlos III); and a grant from the Spanish Federation of Breast Cancer patients (FECMA EPY 1170-10).

Conflict of interest

The authors declared no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC. 2011

Authors and Affiliations

  • Virginia Lope
    • 1
    • 2
    Email author
  • Beatriz Pérez-Gómez
    • 1
    • 2
  • María Pilar Moreno
    • 3
  • Carmen Vidal
    • 4
  • Dolores Salas-Trejo
    • 5
    • 6
  • Nieves Ascunce
    • 2
    • 7
  • Isabel González Román
    • 8
  • Carmen Sánchez-Contador
    • 9
  • María Carmen Santamariña
    • 10
  • Jose Antonio Vázquez Carrete
    • 10
  • Francisca Collado-García
    • 9
  • Carmen Pedraz-Pingarrón
    • 11
  • María Ederra
    • 2
    • 7
  • Francisco Ruiz-Perales
    • 5
    • 6
  • Mercé Peris
    • 4
  • Soledad Abad
    • 3
  • Anna Cabanes
    • 1
    • 2
  • Marina Pollán
    • 1
    • 2
  • DDM Spain
  1. 1.Cancer and Environmental Epidemiology Unit, National Center for EpidemiologyCarlos III Institute of HealthMadridSpain
  2. 2.Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP)MadridSpain
  3. 3.Aragon Breast Cancer Screening Programme. Health Service of AragonZaragozaSpain
  4. 4.Cancer Prevention and Control Unit. Catalan Institute of Oncology (ICO)BarcelonaSpain
  5. 5.Valencia Breast Cancer Screening ProgrammeGeneral Directorate Public HealthValenciaSpain
  6. 6.Centro Superior de Investigación en Salud Pública(CSISP)ValenciaSpain
  7. 7.Navarra Breast Cancer Screening ProgrammePublic Health InstitutePamplonaSpain
  8. 8.Health and Social Welfare DepartmentSection for Health Promotion and ProtectionCastile-LeónSpain
  9. 9.Balearic Islands Breast Cancer Screening Programme. Health Promotion for Women and Childhood. General Directorate Public Health and ParticipationRegional Authority of Health and Consumer AffairsBalearic IslandsSpain
  10. 10.Galicia Breast Cancer Screening ProgrammeRegional Authority of Health, Galicia Regional GovernmentGaliciaSpain
  11. 11.Castile-León Breast Cancer Screening ProgrammeGeneral Directorate Public Health SACYLCastile-LeónSpain

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