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 language | English |
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Pages (from-to) | 2399-2406 |
Number of pages | 8 |
Journal | BJC: British Journal of Cancer |
Volume | 108 |
Issue number | 11 |
DOIs | |
Publication status | Published - 11 Jun 2013 |
Keywords
- Hodgkin lymphoma
- breast cancer
- supradiaphragmatic radiotherapy
- MAMMOGRAPHIC DENSITY
- PARENCHYMAL PATTERNS
- UNITED-STATES
- YOUNG-WOMEN
- DISEASE
- AGE
- RADIATION
- MENARCHE
- COHORT
- CHILDHOOD