Table 2. Comparison of DCE-MRI findings between patients with IBC and DCIS.
| DCE-MRI findings | n (%) |
P | |
|---|---|---|---|
| DCIS (n=11) | IBC (n=53) | ||
| Signal intensity on FS-T2WI | |||
| Hyperintensity | 8 (72.72%) | 43 (81.13%) | 0.577 |
| Moderate | 2 (18.18%) | 5 (9.43%) | |
| Hypointensity | 1 (9.09%) | 5 (9.43%) | |
| Enhancement style | |||
| Mass-like enhancement | 4 (36.36%) | 51 (96.23%) | <0.001 |
| Non-mass-like enhancement | 7 (63.63%) | 2 (3.92%) | |
| Initial enhancement characteristics | |||
| Homogeneous | 9 (81.82%) | 15 (28.30%) | 0.003 |
| Heterogeneous | 1 (9.09%) | 18 (33.96%) | |
| Rim enhancement | 1 (9.09%) | 20 (37.74%) | |
| Maximum slop of increase (×102) | |||
| Mean | 9.31 | 11.35 | 0.299 |
| Standard deviation | 3.41 | 4.11 | |
| Time to peak (min) | |||
| ≤2 | 6 (54.54%) | 45 (84.91%) | 0.024 |
| >2 | 5 (45.45%) | 8 (15.09%) | |
| TIC curve (type I or not) | |||
| I | 3 (27.27%) | 2 (3.77%) | 0.009 |
| II, III | 8 (72.73%) | 51 (96.23%) | |
Abbreviations: DCE-MRI, dynamic contrast-enhanced magnetic resonance imaging; DCIS, breast ductal carcinoma in situ; IBC, invasive breast carcinoma; TIC, time signal intensity curve.