Format

Send to

Choose Destination
Clin Breast Cancer. 2016 Apr;16(2):105-12. doi: 10.1016/j.clbc.2015.08.004. Epub 2015 Aug 28.

Higher Stage of Disease Is Associated With Bilateral Mastectomy Among Patients With Breast Cancer: A Population-Based Survey.

Author information

1
Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA. Electronic address: rafreedman@partners.org.
2
Harvard Medical School, Department of Health Care Policy, Boston, MA.
3
Cancer Registry of Greater California, Public Health Institute, Sacramento, CA.
4
Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA.
5
Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Boston, MA.
6
Harvard Medical School, Department of Health Care Policy, Boston, MA; Division of General Internal Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA.

Abstract

BACKGROUND:

The reasons for increasing rates of bilateral mastectomy for unilateral breast cancer are incompletely understood, and associations of disease stage with bilateral surgery have been inconsistent. We examined associations of clinical and sociodemographic factors, including stage, with surgery type and reconstruction receipt among women with breast cancer.

PATIENTS AND METHODS:

We surveyed a diverse population-based sample of women from Northern California cancer registries with stage 0 to III breast cancer diagnosed during 2010-2011 (participation rate, 68.5%). Using multinomial logistic regression, we examined factors associated with bilateral and unilateral mastectomy (vs. breast-conserving surgery), adjusting for tumor and sociodemographic characteristics. In a second model, we examined factors associated with reconstruction for mastectomy-treated patients.

RESULTS:

Among 487 participants, 58% had breast-conserving surgery, 32% had unilateral mastectomy, and 10% underwent bilateral mastectomy. In adjusted analyses, women with stage III (vs. stage 0) cancers had higher odds of bilateral mastectomy (odds ratio [OR], 8.28; 95% confidence interval, 2.32-29.50); women with stage II and III (vs. stage 0) disease had higher odds of unilateral mastectomy. Higher (vs. lower) income was also associated with bilateral mastectomy, while age ≥ 60 years (vs. < 50 years) was associated with lower odds of bilateral surgery. Among mastectomy-treated patients (n = 206), bilateral mastectomy, unmarried status, and higher education and income were all associated with reconstruction (P < .05).

CONCLUSION:

In this population-based cohort, women with the greatest risk of distant recurrence were most likely to undergo bilateral mastectomy despite a lack of clear medical benefit, raising concern for overtreatment. Our findings highlight the need for interventions to assure women are making informed surgical decisions.

KEYWORDS:

Bilateral mastectomy; Breast cancer; Contralateral prophylactic mastectomy; Reconstruction; Stage

PMID:
26410475
PMCID:
PMC5538374
DOI:
10.1016/j.clbc.2015.08.004
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center