Success rate of breast conserving surgery for different breast cancer screening methods

We evaluated the significance of the success rate of breast conserving surgery in patients with breast cancer discovered by using different screening methods. Patients underwent either population-based screening (group A) or opportunistic screening (group B). We retrospectively investigated patients who visited our hospital in 2012. A total of 552 patients visited our hospital for breast cancer screening. Thirty-five percent of these patients were diagnosed with breast cancer based on the histopathological results. The rate of breast cancer discovery was significantly higher in group B than in group A. The rate of discovery of early clinical stage breast cancer was also higher in group B than in group A. The rate of total breast conserving surgery for breast cancer screening cases was 54.4%. The rate of breast conserving surgery was higher in group B than in group A. Group A patients only underwent mammography, while 80.1% of group B patients underwent mammography plus ultrasonography. These results suggest that adding ultrasonography to breast cancer screening is useful for detection of early breast cancer.