Table 2.
MRI findings of the study population (n = 23).
| Characteristic | Category | N | % |
|---|---|---|---|
| Morphologic pattern | Round or oval | 2 | 9 |
| Lobulated | 2 | 9 | |
| Irregular | 4 | 17 | |
| Ductal | 7 | 30 | |
| Segmental | 8 | 35 | |
| Enhancement | Heterogeneous | 23 | 100 |
| Homogeneous | 0 | 0 | |
| Margins | Regular | 3 | 13 |
| Irregular | 11 | 48 | |
| Spiculated | 9 | 39 | |
| Kinetic contrast enhancement | Progressive | 7 | 30 |
| Plateau | 1 | 4 | |
| Washout | 13 | 57 | |
| Unknown1 | 2 | 9 | |
| BI-RADS classification | 4: suspicious abnormality | 9 | 39 |
| 5: highly suggestive of malignancy | 14 | 61 |
1 MR images of 2 patients were reviewed on a plain film MRI on which no kinetic contrast enhancement could be assessed.