Clinical impact of BI-RADS classification in Taiwanese breast cancer patients: BI-RADS 5 versus BI-RADS 0-4

Yao Lung Kuo, Lili Cheng, Tsai Wang Chang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Objective: The aim of this study was to analyze and determine the prognostic value of the Breast Imaging Reporting and Data System (BI-RADS) classification in Taiwanese patients with breast cancer. Patients and methods: Nine hundred ninety-eight patients with breast cancer were diagnosed between January 1, 1999, and August 31, 2005, and 491 (49%) of them were classified as BI-RADS 5. Overall survival and disease-free survival were estimated with the Kaplan-Meier method and compared across the two groups (BI-RADS 5 versus BI-RADS 0-4) using the log-rank test. Univariate and multivariate analyses were used to identify the prognostic factors. Results: The median follow-up time was 81.8 months. Kaplan-Meier analysis showed a significant difference between the two subgroups in five-year overall survival (P = 0.001) and five-year disease-free survival (P < 0.0001). On univariate analysis, the mammographic findings (BI-RADS 5 versus BI-RADS 0-4) were statistically significantly associated with five-year overall survival and disease-free survival, as were tumor size, lymph-node status, tumor grade, estrogen-receptor status, progesterone-receptor status, and HER-2 status. On multivariate analysis, only the mammographic findings, lymph-node status, HER-2 status, and tumor grade were significant factors related to five-year overall survival and disease-free survival. Conclusion: The BI-RADS classification is a reliable prognostic and predictive factor. Patients with BI-RADS 5 breast cancer showed a worse pattern of relapse than that of BI-RADS 0-4 breast cancer patients.

Original languageEnglish
Pages (from-to)1504-1507
Number of pages4
JournalEuropean Journal of Radiology
Issue number7
Publication statusPublished - 2012 Jul

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging


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