NDLI: Annual or biennial mammography screening for women at a higher risk with a family history of breast cancer: prognostic indicators of screen-detected cancers in New South Wales, Australia

Content Provider	Springer Nature Link
Author	Randall, Deborah Morrell, Stephen Taylor, Richard Hung, Wai Tak
Copyright Year	2008
Abstract	This study examined whether offering annual mammography screening for women with the risk factor of a family history of breast cancer resulted in more favorable prognostic indicators of diagnosed cancers than the usual approach of biennial screening.The study involved women aged 50–69 years with a family history of breast cancer, defined as having ≥1 first-degree relative diagnosed with breast cancer, who were diagnosed with a screen-detected invasive breast cancer between 1998 and 2004 in BreastScreen New South Wales (n = 590). The women were grouped according to whether they screened in an area offering annual screening to women with a family history, or were offered the standard biennial screening. The odds of having favorable tumor size, grade, and nodal status prognosis were compared between these screening groups using logistic regression. A comparison group of women without a family history, all offered biennial screening, was also evaluated based on the same area groupings to examine whether any differences were due to the area, rather than the screening interval policy.Women with a family history who were offered annual screening at BreastScreen NSW were significantly more likely than those who were offered biennial screening to be diagnosed with a tumor ≤20 mm in size (adjusted odds ratio (AOR) = 1.91, 95% CI: 1.21–3.02), and to have a node-negative tumor (AOR = 1.61, 95% CI: 1.03–2.50). There were also significantly higher odds of being diagnosed with tumors ≤15 mm (p < 0.001) and ≤10 mm in size (p = 0.011) in women offered annual screening. There was no significant difference in the odds of a Grade 1 tumor being detected (AOR = 1.26, 95% CI: 0.87–1.81), although the direction of the effect was consistent with that seen for size and nodal status. No significant differences were found in the comparison group of women without a family history.Offering annual screening for women aged 50–69 years with a family history of breast cancer significantly increased the odds of being diagnosed with a smaller, node-negative tumors. Further investigation is required to assess whether the improved prognostic indicators translate into significantly better mortality outcomes for women with a family history offered annually screening.
Starting Page	559
Ending Page	566
Page Count	8
File Format	PDF
ISSN	09575243
Journal	Cancer Causes & Control
Volume Number	20
Issue Number	5
e-ISSN	15737225
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-11-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Breast neoplasms/radiography Breast neoplasms/pathology Mammography/methods Hematology Epidemiology Public Health/Gesundheitswesen Oncology Biomedicine general Cancer Research
Content Type	Text
Resource Type	Article
Subject	Cancer Research Oncology

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