Abstract

Background: Women treated with supradiaphragmatic radiotherapy (sRT) for Hodgkin lymphoma (HL) at young ages have a substantially increased breast cancer risk. Little is known about how menarcheal and reproductive factors modify this risk.

Methods: We examined the effects of menarcheal age, pregnancy, and menopausal age on breast cancer risk following sRT in case-control data from questionnaires completed by 2497 women from a cohort of 5002 treated with sRT for HL at ages

Results: Two-hundred and sixty women had been diagnosed with breast cancer. Breast cancer risk was significantly increased in patients treated within 6 months of menarche (odds ratio (OR) 5.52, 95% confidence interval (CI) (1.97-15.46)), and increased significantly with proximity of sRT to menarche (P-trend

Conclusion: In summary, this paper shows for the first time that sRT close to menarche substantially increases breast cancer risk. Careful consideration should be given to follow-up of these women, and to measures that might reduce their future breast cancer risk.

Original languageEnglish
Pages (from-to)2399-2406
Number of pages8
JournalBJC: British Journal of Cancer
Volume108
Issue number11
DOIs
Publication statusPublished - 11 Jun 2013

Keywords

  • Hodgkin lymphoma
  • breast cancer
  • supradiaphragmatic radiotherapy
  • MAMMOGRAPHIC DENSITY
  • PARENCHYMAL PATTERNS
  • UNITED-STATES
  • YOUNG-WOMEN
  • DISEASE
  • AGE
  • RADIATION
  • MENARCHE
  • COHORT
  • CHILDHOOD

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