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Breast Cancer Research

Volume 6 Supplement 1

Symposium Mammographicum 2004

Open Access

The incidence of interval breast cancers from Wirral Breast Screening Unit between 1 January 1994 and 30 June 2000

  • AP Tansley1,
  • G Penn1,
  • D Green1 and
  • DA Berstock1
Breast Cancer Research20046(Suppl 1):P62

https://doi.org/10.1186/bcr881

Published: 14 July 2004

Objective

To report the detection rate of interval breast cancers in the Wirral Breast Screening Unit between 1 January 1994 and 30 June 2000.

Methods

Women aged 50–64 years were invited for screening, and data prospectively collected for both screen-detected and interval cancer detection rates. Case notes for interval cancers were reviewed together with two-view mammography. True interval and false negative rates were determined for the interval cancers. Rates of recurrence and survival times for these cancers were also collected.

Results

Between 1 January 1994 and 30 June 2000, 82,510 women were invited to attend for screening at the Wirral Breast Screening Unit. A total 63,159 (77%) women attended and 293 screen-detected cancers were observed. A total of 215 invasive interval cancers were detected for the same period, 28% of these occurred in the first 12 month interval, 37% in the next 13–24 months and 36% in the last 25–36 month interval.

Conclusions

The rate of interval cancers was similar over the 3-year period between screening rounds and the incidence of these cancers may not be reduced by shortening the mammographic screening period.

Authors’ Affiliations

(1)
Wirral Hospitals NHS Trust, Merseyside, UK

Copyright

© BioMed Central 2004

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