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Quality-oriented mass mammography screening

L J Burhenne1, H J Burhenne, L Kan

  • 1Department of Radiology, University of British Columbia, Vancouver General Hospital, Canada.

Radiology
|January 1, 1995
PubMed
Summary
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A large-scale mammography screening program demonstrated consistent high-quality cancer detection and cost-efficiency. Early-stage breast cancer detection rates were high across all age groups, indicating program effectiveness.

Area of Science:

  • Public health
  • Radiology
  • Oncology

Background:

  • Mass mammography screening programs aim to detect breast cancer early and cost-effectively.
  • Sustaining high-quality screening with high patient volume is crucial for program success.

Purpose of the Study:

  • To evaluate the quality and cost-efficiency of a large-volume public mammography screening program.
  • To assess the program's ability to maintain high standards of breast cancer detection.

Main Methods:

  • Analysis of data from the Screening Mammography Program of British Columbia over 57 months.
  • Inclusion of 201,937 mammograms from 128,325 women, including those younger than 50.
  • Expansion of the program from one to 14 centers with an increase in radiologist screeners.

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Main Results:

  • 802 cancers detected, with an overall rate of 6.2 per 1,000 women.
  • Higher detection rates in women aged 50 and older (8.1 per 1,000) compared to younger women (2.8 per 1,000).
  • High proportion of early-stage cancers (Stage 0 or I) in both age groups (72-73%), with low rates of lymph node involvement (11-14%).

Conclusions:

  • Quality control is essential for maintaining or improving mass screening program outcomes.
  • The prognostic characteristics of detected breast cancers were similar across different age groups.
  • The study supports the effectiveness of large-scale mammography screening in early breast cancer detection.