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Results from the NHS breast screening programme 1990-1993
S M Moss1, M Michel, J Patnick
1Cancer Screening Evaluation Unit, Institute of Cancer Research, Sutton, Surrey, United Kingdom.
Journal of Medical Screening
|January 1, 1995
Summary
The NHS breast screening programme (NHSBSP) met most targets between 1990-1993, but detecting small invasive cancers needs improvement. Accurate data collection is key for monitoring progress in reducing breast cancer mortality.
Area of Science:
- Public Health
- Radiology
- Oncology
Background:
- The NHS breast screening programme (NHSBSP) aims to reduce breast cancer mortality through regular screening.
- Evaluating the program's performance against established targets is crucial for quality assurance and improvement.
Purpose of the Study:
- To report on the performance of the NHS breast screening programme (NHSBSP) from 1990 to 1993.
- To assess the achievement of interim targets within the NHSBSP during this period.
Main Methods:
- Data were collected from UK screening programs using "Korner" returns and radiology quality assurance data.
- Analysis focused primarily on prevalent screening rounds, with some data on rescreening.
Main Results:
- The overall cancer detection rate was 6.0/1000 screens, with 18% being in situ cancers.
- Two-view mammography led to lower referral rates and higher cancer detection compared to single-view.
- While most programs met interim targets for referral and benign biopsy rates, only 30% met the target for detecting small invasive cancers (< or = 10 mm).
Conclusions:
- The NHSBSP is largely meeting its interim performance targets.
- The detection rate of small invasive breast cancers requires closer monitoring.
- Improved data accuracy on cancer size and interval cancers is needed to gauge progress towards mortality reduction goals.