Table I.
Correlation between DCE-MRI imaging and WHO histopathological grade in patients with invasive ductal breast cancer.
| WHO histopathological grade | ||||||
|---|---|---|---|---|---|---|
| MRI imaging finding | N | Grade 1 | Grade 2 | Grade 3 | χ2-value | P-value |
| Size of mass (cm) | ||||||
| ≤2 | 29 | 4 | 14 | 11 | 12.832 | 0.012 |
| 2–5 | 53 | 1 | 14 | 38 | ||
| ≥5 | 10 | 0 | 2 | 8 | ||
| Shape of mass | ||||||
| Round | 3 | 2 | 1 | 0 | 19.331 | 0.004 |
| Oval | 7 | 2 | 4 | 1 | ||
| Lobulated | 33 | 1 | 14 | 18 | ||
| Irregular | 49 | 0 | 11 | 38 | ||
| Margin of mass | ||||||
| Smooth | 11 | 1 | 7 | 3 | 9.173 | 0.057 |
| Irregular | 47 | 3 | 10 | 34 | ||
| Spiculated | 34 | 1 | 13 | 20 | ||
| Characteristic enhancement | ||||||
| Homogeneous | 15 | 4 | 4 | 7 | 20.538 | 0.000 |
| Heterogeneous | 40 | 1 | 9 | 30 | ||
| Ring-like | 37 | 0 | 17 | 20 | ||
DCE-MRI, dynamic contrast enhanced magnetic resonance imaging; WHO, world health organization; N, number.