BIRADS

Chance of Malignancy

Managment

0

unknown

recall for diagnostic mammographic workup

1-2

~0%

yearly routine screening mammogram

3

<2%

followup diagnostic mammogram at short interval (usually 6 mo)

4

4A 2-9%

4B 10-49%

4C 50-94%

tissue diagnosis (biopsy)

5

at least 95%