4.
Enhancement patterns and necrosis among lymphoma, thymic carcinoma and thymoma
| Pathological types | Cases | Enhancement patterns [% (n)]* | Necrosis [% (n)]** | |||
| Homogeneous | Inhomogeneous | No | Yes | |||
| *, Compared with lymphoma and thymic carcinoma, a majority of thymoma cases had homogenous enhancement patterns in the arterial phase (Fisher’s exact test, 100% vs. 56.5%, P=0.006; 100% vs. 25.0%, P<0.001); **, Compared with thymic carcinoma, thymoma had less frequency of internal necrosis (7.1% vs. 75.0%, P<0.001). | ||||||
| Lymphoma | 23 | 56.5 (13) | 43.5 (10) | 60.9 (14) | 39.1 (9) | |
| Thymic carcinoma | 16 | 25.0 (4) | 75.0 (12) | 25.0 (4) | 75.0 (12) | |
| Thymoma | 14 | 100 (14) | 0 (0) | 92.9 (13) | 7.1 (1) | |
| P | <0.001 | 0.001 | ||||