Risk assessment and quality assurance tool developed by American College of Radiology that provides a widely accepted lexicon and reporting schema for imaging of the breast. It applies to mammography, ultrasound, and MRI.
| Score | Category | Likelihood of cancer | Next course of action |
|---|---|---|---|
| 0 | Need additional imaging | N/A | Alternative imaging test |
| 1 | Negative | 0% | Routine screening after 1 year |
| 2 | Benign | 0% | Routine screening after 1 year |
| 3 | Probably benign | 0-2% | Screen after 6 months |
| 4 | Suspicious | 4a (2-10%): Low suspicion | |
| 4b (10-50%): Moderate suspicion | |||
| 4c (50-95%): High suspicion | Biopsy | ||
| 5 | Highly suggestive of malignancy | > 95% | Biopsy |
| 6 | Biopsy proven malignancy | - |