Trends in incidence, mortality and survival in women with breast cancer from 1985 to 2012 in Granada, Spain: a population-based study
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Springer Nature
Materia
Cáncer Breast Population-based Mortality Survival rates
Date
2018Referencia bibliográfica
Baeyens-Fernández, J. A., Molina-Portillo, E., Pollán, M., Rodríguez-Barranco, M., Del Moral, R., Arribas-Mir, L., ... & Sánchez, M. J. (2018). Trends in incidence, mortality and survival in women with breast cancer from 1985 to 2012 in Granada, Spain: a population-based study. BMC cancer, 18(1), 781.
Sponsorship
This study was supported by a grant from the Acción Estratégica en Salud plan for the High Resolution Project on Prognosis and Care of Cancer Patients (No. AC14/00036) awarded by the Spanish Ministry of Economy and Competitiveness and co-funded by the European Regional Development Fund (ERDF).Abstract
The incidence of breast cancer has increased since the 1970s. Despite favorable trends in prognosis,
the role of changes in clinical practice and the introduction of screening remain controversial. We examined breast
cancer trends to shed light on their determinants Overall, age-adjusted (European Standard Population) incidence rates increased from 48.0 cases × 100,000
women in 1985–1989 to 83.4 in 2008–2012, with an annual percentage change (APC) of 2.5% (95%CI, 2.1–2.9) for
1985–2012. The greatest increase was in women younger than 40 years (APC 3.5, 95%CI, 2.4–4.8). For 2000–2012
the incidence trend increased only for stage I tumors (APC 3.8, 95%CI, 1.9–5.8). Overall age-adjusted breast cancer
mortality decreased (APC − 1, 95%CI, − 1.4 – − 0.5), as did mortality in the 50–69 year age group (APC − 1.3, 95%CI,
− 2.2 – − 0.4). Age-standardized net survival increased from 67.5% at 5 years in 1985–1989 to 83.7% in 2010–2012.
All age groups younger than 70 years showed a similar evolution. Five-year net survival rates were 96.6% for
patients with tumors diagnosed in stage I, 88.2% for stage II, 62.5% for stage III and 23.3% for stage IV. Breast cancer incidence is increasing – a reflection of the evolution of risk factors and increasing
diagnostic pressure. After screening was introduced, the incidence of stage I tumors increased, with no decrease in
the incidence of more advanced stages. Reductions were seen for overall mortality and mortality in the 50–69 year
age group, but no changes were found after screening implementation. Survival trends have evolved favorably
except for the 70–84 year age group and for metastatic tumors.