Table 2.
Characteristics of Malignant Lesions
| Characteristic | Value |
|---|---|
| Total number | 26 |
| Maximum size at MR, mm, mean (range) | 38 (9–80) |
| Histopathological type | |
| Invasive ductal carcinoma (IDC) | 21 (81) |
| Other histology (non-IDC) | 5 (19) |
| Invasive lobular carcinoma | 3 |
| Ductal carcinoma in situ | 1 |
| Invasive metaplastic squamous cell | |
| carcinoma | 1 |
| Lymph node metastases* | |
| Positive | 12 (46) |
| Negative | 12 (46) |
| Histological grade* (IDC lesions) | |
| I | 4 (19) |
| II | 6 (29) |
| III | 10 (48) |
| Nuclear grade* (IDC lesions) | |
| I | 1 (5) |
| II | 10 (48) |
| III | 9 (43) |
| Lesion enhancement type* | |
| Mass | 17 (65) |
| Nonmass | 8 (31) |
| Enhancement kinetic type* | |
| Washout | 13 (50) |
| Plateau | 11 (42) |
| Progressive | 1 (4) |
IDC, invasive ductal carcinoma. Data are numbers of patients (percentage), unless specified otherwise.
*
Data unavailable: lymph node status (n = 2); histological grade (n = 1); nuclear grade (n = 1); contrast-enhanced examination (n = 1, invasive metaplastic squamous cell carcinoma).