Table 5 Relationship between molecular subtypes and MRI findings
MRI | Luminal A N = 34 | Luminal B N = 10 | HER2/neu-enriched N = 7 | Triple negative N = 9 | Test | P value | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Â | No | % | No | % | No | % | No | % | X2 | Â |
Lesion | ||||||||||
 Mass | 28 | 82.4 | 8 | 80 | 4 | 57.1 | 9 | 100 | 4.86 | 0.18 |
 NME | 6 | 17.6 | 2 | 20 | 3 | 42.9 | 0 | 0.0 |  |  |
Enhancement pattern | ||||||||||
 Homogenous enhancement | 5 | 14.7 | 2 | 20.0 | 1 | 14.3 | 0 | 0.0 |  |  |
 Heterogenous enhancement | 24 | 70.6 | 7 | 70.0 | 6 | 85.7 | 3 | 33.3 | 15.74 | 0.02 |
 Rim enhancement | 5 | 14.7 | 1 | 10.0 | 0 | 0.0 | 6 | 66.7 |  |  |
Shape of mass lesions | ||||||||||
 Round | 1 | 3.6 | 0 | 0.0 | 0 | 0.0 | 3 | 33.3 | 13.34 | 0.03 |
 Oval | 5 | 17.9 | 1 | 12.5 | 0 | 0.0 | 3 | 33.3 |  |  |
 Irregular | 22 | 78.6 | 7 | 87.5 | 4 | 100 | 3 | 33.3 |  |  |
Margin of mass lesions | ||||||||||
 Circumscribed | 2 | 7.1 | 1 | 12.5 | 0 | 0 | 6 | 66.7 | 17.44 | 0.001 |
 Non circumscribed | 26 | 92.9 | 7 | 87.5 | 4 | 100 | 3 | 33.3 |  |  |
Kinetic | ||||||||||
 Plateau | 20 | 58.8 | 6 | 60.0 | 3 | 42.9 | 3 | 33.3 |  |  |
 Washout | 3 | 8.8 | 1 | 10.0 | 4 | 57.1 | 6 | 66.7 | 20.7 | 0.002 |
 Persistent | 11 | 32.4 | 3 | 30.0 | 0 | 0.0 | 0 | 0.0 |  |  |