Table 4.
MRI characteristics of IMPC lesions (n = 52).
| Characteristics | No. (%) |
|---|---|
| Mass | 47 |
| Shape | |
| Oval | 2 (4.3) |
| Lobular | 4 (8.5) |
| Irregular | 41 (87.2) |
| Margin | |
| Smooth | 1 (2.1) |
| Irregular | 22 (46.8) |
| Spiculated | 24 (51.1) |
| Non-mass | 5 (9.6) |
| Pattern | |
| Segmental | 5 (100) |
| Multiple regions | 0 (0) |
| Internal enhancement | |
| Homogenous | 1 (20.0) |
| Heterogenous | 4 (80.0) |
| Kinetic curve assessment at delayed phase | |
| Persistent | 3 (5.8) |
| Plateau | 29 (55.8) |
| Washout | 20 (38.5) |
Notes: Data represent the no. (%) of patients.
Abbreviations: MRI, magnetic resonance imaging; IMPC, invasive micropapillary breast carcinoma.