Table 1.
Breast Imaging-Reporting and Database System (BI-RADS).
| Category | Assessment | Follow-up |
|---|---|---|
| 0 | Need additional imaging evaluation | Additional imaging needed before a category can be assigned |
| 1 | Negative | Continue annual screening mammography (for women over age 40) |
| 2 | Benign (non-cancerous) finding | Continue annual screening mammography (for women over age 40) |
| 3 | Probably benign | Receive a 6-month follow-up mammogram |
| 4 | Suspicious abnormality | May require biopsy |
| 5 | Highly suggestive of malignancy (cancer) | Requires biopsy |
| 6 | Known biopsy—proven malignancy (cancer) | Biopsy confirms presence of cancer before treatment begins |