Table 2.
Relationship between MRI findings and pathological diagnostics.
| Pathology | Diameter 1 (mm) | Margin2 | Cystic2 | SII1 | ||
|---|---|---|---|---|---|---|
| Regular | Lobulated | No | Yes | |||
| Benign (n = 5) | 73.4 ± 39.3 | 3 (60) | 2 (40) | 3 (60) | 2 (40) | 39.9 ± 20.2 |
| Thymic hyperplasia | 49.5 ± 7.8 | 2 (100) | 0 (0) | 2 (100) | 0 (0) | 60.5 ± 44.2 |
| Mature teratoma | 114.5 ± 20.5 | 0 (0) | 2 (100) | 0 (0) | 2 (100) | 41.7 ± 6.4 |
| Castleman disease | 39 | 1 (100) | 0 (0) | 1 (100) | 0 (0) | -5.1 |
| Malignant (n = 50) | 71.9 ± 32.3 | 20 (40) | 30 (60) | 30 (60) | 20 (40) | 2.1 ± 8.9 |
| Low-risk thymoma | 54.2 ± 20.7 | 10 (76.9) | 3 (23.1) | 9 (69.2) | 4 (30.8) | 7.4 ± 17.8 |
| High-risk thymoma | 63.4 ± 31.7 | 6 (37.5) | 10 (62.5) | 11 (68.7) | 5 (31.3) | -0.8 ± 6.5 |
| Thymic carcinoma | 74.6 ± 19.2 | 1 (12.5) | 7 (87.5) | 4 (50) | 4 (50) | 2.6 ± 5.3 |
| Thymic NET | 88.5 ± 24.7 | 0 (0) | 2 (100) | 0 (0) | 2 (100) | -4.3 ± 9.1 |
| Malignant GCT | 124.8 ± 35.1 | 0 (0) | 4(100) | 0 (0) | 4 (100) | 1.4 ± 3.9 |
| Lymphoma | 86.1 ± 30.7 | 3 (42.9) | 4 (57.1) | 6 (85.7) | 1 (14.3) | 0.5 ± 4.7 |
1 Data are reported as mean ± standard deviation.
2 Data are reported as frequency (percentage).
SII, Signal intensity index; NET, Neuroendocrine tumor; GCT, germ cell tumor.
Bold and italics values indicated the values of the two main groups (benign lesions and malignant lesions).