Risk of invasive breast cancer in women diagnosed with ductal carcinoma in situ in Australia between 1995 and 2005

Publication
Release Date: 09 Mar 2010
Author: AIHW
Media release

PDF Report (653Kb)

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This report presents data that show that women who are diagnosed with ductal carcinoma in situ (DCIS) are at significantly increased risk of being diagnosed with invasive breast cancer later on in their lives, even though the DCIS would have been treated appropriately at the time. Thus these women warrant close medical surveillance in order to detect and treat any invasive breast cancers that may arise.

ISSN: 1039-3307
ISBN: 978 1 74024 994 2
Cat. no: CAN 47
Pages: 36

Findings from this report:

Women previously diagnosed with DCIS were four times as likely to develop invasive breast cancer
Women aged less than 40 at the time of DCIS diagnosis had a higher chance of a subsequent invasive breast cancer
Women aged less than 40 years at DCIS diagnosis developed relatively small subsequent invasive cancers
Women who had been diagnosed with DCIS had a 5.3% risk of being diagnosed with invasive breast cancer within 5 years

Preliminary material (249KB PDF)
- Title and verso pages
- Contents
- Acknowledgments
- Abbreviations
- Summary
Body section (478KB PDF)
1. Introduction
2. Incidence of DCIS
  - Incidence of DCIS in Australia
  - DCIS detected by BreastScreen Australia
3. Probability of invasive breast cancer following a diagnosis of DCIS
  - Brief description of data and method
  - Results
4. Relative risk of invasive breast cancer for women diagnosed with DCIS
  - Brief description of method
  - Results
5. Tumour size and nodal status
  - Brief description of data and method
  - Results
End matter (138KB PDF)
- Appendix: Technical notes
  - Data sources (excluding the DCIS data set)
    - Australian Cancer Database (ACD), AIHW
    - National Mortality Database (NMD), AIHW
    - National Death Index (NDI), AIHW
  - The four-month rule
  - The DCIS data set
  - Caveats
  - Some extra information regarding the Kaplan-Meier estimates of probability of invasive breast cancer
  - Details of the test used to detect a difference between observed and expected tumour size and nodal status (Chapter 5)
- References
  - Acronyms used in references
  - References
- List of tables
- List of figures

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