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Table 2 BI-RADS assessment categories and the number of index lesions found for each category

From: The implementation of natural language processing to extract index lesions from breast magnetic resonance imaging reports

BI-RADS category

Implication

Number

0

Requires additional imaging assessment and/or prior imaging for comparison

0

1

Negative

0

2

Benign discovery

28

3

Probably benign discovery

60

4

Suspected suspicious abnormality - biopsy

87

5

Highly suggestive of malignancy - appropriate action should be taken

119

6

Malignancy confirmed by biopsy - clinically feasible surgical resection

177

  1. BI-RADS Breast Imaging Reporting and Data System