Table 1. Patients’ Age and the Size, Distribution, Enhancement Pattern, Symmetricity, and Location of Non-Mass Enhancement Lesions Relative to the Index Cancer Versus Histology.
| Benign | Malignant | P Value | |
|---|---|---|---|
| No. of Patients, % | 15 (17.0) | 73 (83.0) | |
| Age, ya | 53.7 ± 12.1 | 51.6 ± 9.6 | 0.462 |
| Size, cma | 3.3 ± 1.5 | 3.7 ± 1.6 | 0.410 |
| Distribution, % | 0.034 | ||
| focal | 3 (20.0) | 0 | 0.004 |
| linear | 2 (13.3) | 39 (53.4) | 0.005 |
| segmental | 1 (6.7) | 30 (41.1) | 0.011 |
| regional | 9 (60.0) | 4 (5.5) | < 0.001 |
| Enhancement, % | < 0.001 | ||
| homogeneous | 4 (26.7) | 10 (13.7) | 0.247 |
| heterogeneous | 9 (60.0) | 33 (45.2) | 0.296 |
| clumped | 2 (13.3) | 23 (31.5) | 0.215 |
| clustered ring | 0 | 7 (9.6) | 0.598 |
| Symmetricity, % | 0.004 | ||
| Symmetric | 3 (20.0) | 0 | |
| Asymmetric | 12 (80.0) | 73 (100) | |
| Location, % | |||
| same quadrant | 10 (66.7) | 69 (94.5) | 0.006 |
| different quadrant | 2 (13.3) | 3 (4.1) | 0.200 |
| contralateral | 3 (20.0) | 1 (1.4) | 0.015 |
aData are presented as mean ± SD.