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Published in: Breast Cancer Research and Treatment 2/2018

01-04-2018 | Epidemiology

Worse survival after breast cancer in women with anorexia nervosa

Authors: Annet Bens, Fotios C. Papadopoulos, Eero Pukkala, Anders Ekbom, Mika Gissler, Lene Mellemkjær

Published in: Breast Cancer Research and Treatment | Issue 2/2018

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Abstract

Purpose

A history of anorexia nervosa has been associated with a reduced risk of developing breast cancer. We investigated survival after breast cancer among women with a prior anorexia nervosa diagnosis compared with women in a population comparison group.

Methods

This register-based study included combined data from Sweden, Denmark and Finland. A total of 76 and 1462 breast cancer cases identified among 22,654 women with anorexia nervosa and 224,619 women in a population comparison group, respectively, were included in the study. Hazard ratios (HR) for overall and breast cancer-specific mortality after breast cancer diagnosis were estimated using Cox regression. Cause of death was available only for Swedish and Danish women; therefore, the analysis on breast cancer-specific mortality was restricted to these women.

Results

We observed 23 deaths after breast cancer among anorexia nervosa patients and 247 among population comparisons. The overall mortality after the breast cancer diagnosis was increased in women with a history of anorexia nervosa compared with population comparisons (HR 2.5, 95% CI 1.6–3.9) after adjustment for age, period and extent of disease. Results were similar for overall (HR 2.3, 95% CI 1.4–3.6) and breast cancer-specific mortality (HR 2.1, 95% CI 1.3–3.6) among Swedish and Danish women.

Conclusions

We found that female breast cancer patients with a prior diagnosis of anorexia nervosa have a worse survival compared with other breast cancer patients.
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Metadata
Title
Worse survival after breast cancer in women with anorexia nervosa
Authors
Annet Bens
Fotios C. Papadopoulos
Eero Pukkala
Anders Ekbom
Mika Gissler
Lene Mellemkjær
Publication date
01-04-2018
Publisher
Springer US
Published in
Breast Cancer Research and Treatment / Issue 2/2018
Print ISSN: 0167-6806
Electronic ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-017-4618-5

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