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Table 1 BIRADS assessment categories according to BIRADS atlas 2013 category assessment

From: Comparing the diagnostic efficacy of digital breast tomosynthesis with full-field digital mammography using BI-RADS scoring

BIRADS 0 Incomplete—need additional imaging evaluation and/or prior mammograms for comparison
BIRADS 1 Negative
BIRADS 2 Benign
BIRADS 3 Probably benign
BIRADS 4 Suspicious 4A: low suspicion for malignancy 4B: moderate suspicion for malignancy 4C: high suspicion for malignancy
BIRADS 5 Highly suggestive of malignancy
BIRADS 6 Known biopsy-proven malignancy