Table 2 Allocation of cases to the two protocols.

Benign

Precursor lesions

Malignant cases

Total

Standard protocol

Extended protocol

Standard protocol

Extended protocol

Standard protocol

Extended protocol

BI-RADS 3

20

17

0

0

2

0

39

BI-RADS 4A

16

18

1

1

1

1

38

BI-RADS 4B

8

8

1

1

3^a

3

24

BI-RADS 4C

0

1

0

0

2

3

6

Total

44

44

2

2

8

7

107