CATEGORIES:

BIRADS 0 - Incomplete

BIRADS 1-  Negative

BIRADS 2 - Benign findings

BIRADS 3 - Probably benign

BIRADS 4 - Suspicious abnormality

BIRADS 5 - Highly suspicious of malignancy

BIRADS 6 - Known biopsy-proven malignancy

(Ikeda 2010)