Table 2.
Patients’ and lesions’ characteristics
| Total patients: 21 | N (%) |
|---|---|
| Female | 21 (100) |
| Mean age in years ± SD (range) | 51.3 ± 9.1 (41–70) |
| Indication for MRI | |
| Staging | 15 (71.4) |
| Diagnostic for unclear finding | 6 (28.6) |
| Total lesions: 30 | |
| Lesion size in centimeters (mean ± SD) | 2.63 ± 2.04 |
| Range | 0.6 – 8.5 |
| Background enhancement | |
| No | 1 (3.3) |
| Minimal | 11 (36.7) |
| Mild | 3 (10.0) |
| Moderate | 6 (20.0) |
| Marked | 9 (30.0) |
| Initial type of pathology | |
| CNB | 24 (80.0) |
| Imaging / No biopsy | 5 (16.7) |
| Mastectomy for other lesion | 1 (3.3) |
| Clip present | |
| Yes | 15 (50.0) |
| No | 15 (50.0) |
| Initial diagnosis category | |
| Benign | 10 (33.3) |
| - Cyst | − 5 |
| - Fibrocystic changes | − 2 |
| - UDH | − 1 |
| - Adenosis | − 1 |
| - Fibroadenoma | − 1 |
| High risk | 3 (10.0) |
| - ADH | −1 |
| - ALH | −1 |
| - Papilloma | −1 |
| In situ carcinoma | 3 (10.0) |
| - DCIS | − 3 |
| Invasive carcinoma | 14 (46.7) |
| - IDC | − 14 |
| Invasive breast cancer grade | |
| Nottingham grade 1 | 2 (14.3) |
| Nottingham grade 2 | 4 (28.6) |
| Nottingham grade 3 | 8 (57.1) |
| Associated DCIS with invasive carcinoma | |
| Yes | 11 (78.6) |
| No | 3 (21.4) |
| ER status | |
| Positive | 9 (56.3) |
| Negative | 6 (37.5) |
| Unknown | 1 (6.3) |
| PR status | |
| Positive | 8 (50.0) |
| Negative | 7 (43.8) |
| Unknown | 1 (6.3) |
| HER2-Neu status | |
| Positive | 2 (13.3) |
| Negative | 11 (73.3) |
| Unknown | 2 (13.3) |
Abbreviations: SD: standard deviation; MRI: magnetic resonance imaging; CNB: core needle biopsy; UDH: usual type ductal hyperplasia; DCIS: ductal carcinoma in situ; IDC: invasive ductal carcinoma; ER: estrogen receptor; PR: progesterone receptor; HER2-Neu: human epidermal growth factor receptor 2.