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  • Title: Trends in breast cancer survival in Germany from 1976 to 2008--a period analysis by age and stage.
    Author: Holleczek B, Arndt V, Stegmaier C, Brenner H.
    Journal: Cancer Epidemiol; 2011 Oct; 35(5):399-406. PubMed ID: 21470930.
    Abstract:
    BACKGROUND: Implementation of mammography screening and advances in breast cancer treatment are considered as main reasons for the decline in breast cancer mortality observed in many industrialized countries during the past two decades. The purpose of this study was to provide a comprehensive assessment of trends in breast cancer incidence, mortality and survival by age and stage in Germany. METHODS: Data from the population based Saarland Cancer Registry including patients diagnosed with breast cancer from 1972 to 2007 were used. Period analysis methods were employed to calculate 5-year relative survival and its trends. RESULTS: Mortality started to decline during the 1990s, and a previous increase in incidence levelled off in the early 21st century. Overall age-standardized 5-year relative survival of invasive breast cancer steadily increased during the past three decades to 83% in 2004-2008. This increase was mostly due to an increase in survival for patients with localized cancers and locally or regionally spread tumours (increase of age-standardized 5-year relative survival from 92% to 98% and from 65% to 80%, respectively, between 1992 and 2008), whereas age-standardized 5-year relative survival essentially remained unchanged at levels close to 21% in patients with metastasized cancer. For women aged 70 years or older 5-year relative survival and its increase over time were inferior compared to younger patients. CONCLUSIONS: The observed trends in population based survival suggest that advances in treatment of early breast cancer have substantially contributed to the gain in prognosis. The poor prognosis of metastasized breast cancer patients and the increasing age gradient in 5-year relative survival call for enhanced efforts for early detection and more rigorous treatment of elderly patients.
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