PMID: 11899119Mar 20, 2002Paper

Stage-specific incidence of breast cancer before the beginning of organized screening programs in Italy

Cancer Causes & Control : CCC
Eva BuiattiSCREENREG Working Group

Abstract

To measure stage-specific geographic and time variability of breast cancer in seven Italian areas before the onset of organized screening programs. All invasive cancers (8689 cases) arising in women aged 40-79 years during the pre-screening period 1985-1997, were considered. Multiple Poisson regression analysis was performed. About 39% of the cases were classified as "early," 52% as "advanced," and 9% as "unspecified" stage. Age-adjusted incidence rates showed a significant geographic variation for early but not for advanced cancers (range: 58-103 cases/100,000 and 104-125 cases/100,000, respectively). The result was confirmed in the multiple regression analysis after adjustment for year of diagnosis and age. Early breast cancer risk adjusted for age and registry showed a significant increase over time (+3.9% per year for all ages, and +6.2% per year for age category 50-79). In contrast, a decreasing time trend was observed for advanced cancer of 3 cm or over in women aged less than 60. In our study, early breast cancer incidence varied both by geographic area and time before the commencement of screening. The differences in early-stage incidence may well be related to differences in availability of "spontaneous" mammography. L...Continue Reading

Citations

Jan 29, 2005·European Journal of Cancer Prevention : the Official Journal of the European Cancer Prevention Organisation (ECP)·M Montella, F Schittulli
Jun 24, 2020·Frontiers in Oncology·Gianluca VanniOreste Claudio Buonomo

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