Table 9 BI-RADS categorization at MRI of previous mammographic and ultrasound findings
Findings at previous examinations | BI-RADS at MRI | |||||
|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | ||
BI-RADS* 3 | ||||||
Mammographic findings | ||||||
Asymmetry | 9 | 2 | 6 | 1 | ||
Nodule | 4 | 1 | 3 | |||
Multiple nodules | 1 | 1 | ||||
Microcalcifications | 1 | 1 | ||||
Ultrasound findings | ||||||
Solid nodule | 36 | 2 | 30 | 1 | 3 | |
Multiple nodules | 17 | 15 | 1 | 1 | ||
Complicated cyst | 13 | 13 | ||||
Cluster of microcysts | 5 | 5 | ||||
Ductal ectasia | 1 | 1 | ||||
Asymmetry | 1 | 1 | ||||
BI-RADS 4A | ||||||
Mammographic findings | ||||||
Asymmetry | 2 | 1 | 1 | |||
Nodule | 3 | 2 | 1 | |||
Multiple nodules | 2 | 1 | 1 | |||
Segmental calcifications | 1 | 1 | ||||
Ultrasound findings | ||||||
Solid Nodule | 27 | 1 | 15 | 3 | 5 | 3 |
Multiple nodules | 1 | 1 | ||||
Ductal ectasia | 3 | 1 | 1 | 1 | ||
Complicated cyst | 1 | 1 | ||||
Intraductal papilloma | 1 | 1 | ||||
Asymmetry | 2 | 2 | ||||