Table 1. Characteristics of patients without NME and with accompanying NME in MR imaging.
| Without NME (n = 123) | With NME (n = 40) | P-value | |
|---|---|---|---|
| Age (y) | 53.9 ±11.1 | 54.3 ± 9.0 | .848 |
| MR finding | |||
| Index mass size (cm) | 2.0 ± 1.0 | 2.2 ± 0.9 | .135 |
| Background parenchymal enhancement | .126 | ||
| Minimal | 57 (46.3) | 24 (60) | |
| Mild | 38 (30.9) | 9 (22.5) | |
| Moderate | 17 (13.8) | 7 (17.5) | |
| Marked | 11 (8.9) | 0 (0) | |
| Shape of index mass | .438 | ||
| Oval | 23 (18.7) | 4 (10) | |
| Round | 11 (8.9) | 4 (10) | |
| Irregular | 89 (72.4) | 32 (80) | |
| Margin of index mass | .248 | ||
| Circumscribed | 13 (10.6) | 1 (2.5) | |
| Irregular | 74 (60.2) | 28 (70) | |
| Spiculated | 36 (29.3) | 11 (27.5) | |
| Enhancement of index mass | .017 | ||
| Homogeneous | 25 (20.5) | 2 (5) | |
| Heterogeneous | 87 (71.3) | 30 (75) | |
| Rim | 10 (8.2) | 8 (20) | |
| Histopathologic result | |||
| Invasive carcinoma size (cm) | 1.9 ± 1.0 | 2.2 ± 1.2 | .054 |
| MR-pathology discrepancy | .005 | ||
| Concordance | 113 (91.9) | 29 (72.5) | |
| Discordance | 10 (10) | 11 (27.5) | |
| Estrogen receptor status | .214 | ||
| Positive | 94 (76.4) | 26 (65) | |
| Negative | 29 (23.6) | 14 (35) | |
| Progesterone receptor status | .150 | ||
| Positive | 72 (58.5) | 19 (47.5) | |
| Negative | 51 (41.5) | 21(52.5) | |
| HER2 receptor status | .007 | ||
| Positive | 16 (13) | 13 (32.5) | |
| Negative | 107 (87) | 27 (67.5) |