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Published on: August 30, 2013
[Mammography screening in Rogaland--the first round]
1Radiologisk avdeling, Sentralsjukehuset i Rogaland 4001 Stavanger. barivers@online.no
Summary
Mammography screening in Rogaland, Norway, achieved high attendance and cancer detection rates. Early results suggest a 30% breast cancer mortality reduction is attainable, meeting quality targets.
Area of Science:
- Oncology
- Public Health
- Radiology
Background:
- Mammography screening is a validated method for early breast cancer detection.
- Norway initiated a mammography screening trial in 1994 across four counties.
- The trial aimed to inform the decision for a national breast screening program.
Purpose of the Study:
- To evaluate the quality and effectiveness of mammography screening in Rogaland county.
- To identify practical and administrative approaches for screening.
- To assess the potential for a 30% reduction in breast cancer mortality.
Main Methods:
- A trial was conducted in Rogaland, Norway, from November 1995 to December 1997.
- 31,069 women aged 50-69 years were invited to participate in the first screening round.
- Data collected included attendance rates, referral reasons, cancer detection rates, tumor characteristics, and axillary metastasis.
Main Results:
- Attendance rate was 88.6%, with 6.7% referred for further examination.
- The cancer detection rate was 8.4 per 1,000 women (6.1 invasive, 2.3 in situ).
- 70% of detected tumors were ≤15 mm, and 82.1% showed no axillary metastases.
Conclusions:
- Diagnostic results from Rogaland's first mammography screening round met quality targets.
- Detection rates surpassed those in the other three trial counties.
- A 30% reduction in breast cancer mortality is considered attainable based on these findings.
