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See Latest ArticlesEvidence of poorer survival in pregnancy-associated breast cancer
Obstetrics and Gynecology, 07/03/08
Rodriguez AO et al. - In a trial to compare stage distribution, tumor characteristics, and survival outcome in pregnancy-associated and non–pregnancy-associated breast cancer, and to evaluate pregnancy as a risk factor for mortality in breast cancer, it was shown that pregnancy-associated breast cancer presented with more advanced disease, larger tumors, and increased percentage of hormone receptor–negative tumors. When controlled for stage, race, and hormone receptor status, these cases had a slightly higher risk of death, even when only localized-stage disease was considered
Methods- Women with breast cancer occurring within 9 months before or 1 year after an obstetric delivery were identified
- Age-matched, non–pregnancy-associated breast cancer controls were also identified
- Demographics, cancer stage, tumor size, histology, hormone receptor status, type of treatment, and survival were reviewed and compared
- Predictive factors for death from breast cancer were identified using proportional hazards modeling
- 797 pregnancy-associated breast cancer cases were compared with 4177 non–pregnancy-associated breast cancer controls
- Pregnancy-associated breast cancer cases were significantly more likely to have more advanced stage, larger primary tumor, hormone receptor negative tumor, and mastectomy as a component of their treatment
- In survival analysis, pregnancy-associated breast cancer had a higher death rate than non–pregnancy-associated breast cancer (39.2% vs 33.4%)
- Advancing stage, race, hormone receptor–negative tumors, and pregnancy were all significant predictors of death
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