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Breast cancer in younger women in Switzerland 1996-2009: A longitudinal population-based study


Bodmer, Alexandre; Feller, Anita; Bordoni, Andrea; Bouchardy, Christine; Dehler, Silvia; Ess, Silvia; Levi, Fabio; Konzelmann, Isabelle; Rapiti, Elisabetta; Steiner, Annik; Clough-Gorr, Kerri M (2015). Breast cancer in younger women in Switzerland 1996-2009: A longitudinal population-based study. Breast, 24(2):112-117.

Abstract

BACKGROUND: Breast cancer (BC) is the most commonly diagnosed cancer and a leading cause of death in younger women.
METHODS: We analysed incidence, mortality and relative survival (RS) in women with BC aged 20-49 years at diagnosis, between 1996 and 2009 in Switzerland. Trends are reported as estimated annual percentage changes (EAPC).
RESULTS: Our findings confirm a slight increase in the incidence of BC in younger Swiss women during the period 1996-2009. The increase was largest in women aged 20-39 years (EAPC 1.8%). Mortality decreased in both age groups with similar EAPCs. Survival was lowest among women 20-39 years (10-year RS 73.4%). We observed no notable differences in stage of disease at diagnosis that might explain these differences.
CONCLUSIONS: The increased incidence and lower survival in younger women diagnosed with BC in Switzerland indicates possible differences in risk factors, tumour biology and treatment characteristics that require additional examination.

Abstract

BACKGROUND: Breast cancer (BC) is the most commonly diagnosed cancer and a leading cause of death in younger women.
METHODS: We analysed incidence, mortality and relative survival (RS) in women with BC aged 20-49 years at diagnosis, between 1996 and 2009 in Switzerland. Trends are reported as estimated annual percentage changes (EAPC).
RESULTS: Our findings confirm a slight increase in the incidence of BC in younger Swiss women during the period 1996-2009. The increase was largest in women aged 20-39 years (EAPC 1.8%). Mortality decreased in both age groups with similar EAPCs. Survival was lowest among women 20-39 years (10-year RS 73.4%). We observed no notable differences in stage of disease at diagnosis that might explain these differences.
CONCLUSIONS: The increased incidence and lower survival in younger women diagnosed with BC in Switzerland indicates possible differences in risk factors, tumour biology and treatment characteristics that require additional examination.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Institute of Pathology and Molecular Pathology
04 Faculty of Medicine > Epidemiology, Biostatistics and Prevention Institute (EBPI)
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2015
Deposited On:30 Jan 2015 13:47
Last Modified:05 Apr 2016 18:46
Publisher:Elsevier
ISSN:0960-9776
Publisher DOI:https://doi.org/10.1016/j.breast.2014.11.004
PubMed ID:25522906

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