Table 1.
Clinical and imaging features of subtypes
| Geminomas (n = 17) | MGCTs (n = 16) | p | |
|---|---|---|---|
| Clinical findings | |||
| Gender (M : F) | 15:2 | 16:0 | 0.485 |
| Age at onset (years) | 15.3 ± 3.3 | 10.2 ± 4.6 | 0.037 a |
| Course of disease (months) | 10.6 (3–26) | 8.8 (2–44) | 0.186 |
| Tumor marker tests (n = 23, positive : negative) |
3:7 | 9:4 | 0.100 |
| Imaging findings | |||
| Size (cm3) | 54.27 ± 17.95 | 75.23 ± 27.23 | 0.487 |
| Mass effect (n, subtle:obvious) |
13:4 | 8:8 | 0.157 |
| Peritumoral edema (n, subtle:obvious) |
14:3 | 10:6 | 0.259 |
| Tumor cystic-solidity (cyst/mass ratio) |
0.53 ± 0.32 | 0.28 ± 0.19 | 0.030 a |
| ADC value (×10-3 mm2/s) | 0.86 ± 0.27 | 1.42 ± 0.39 | <0.001 a |
| Inhomogeneous enhancement (n, subtle:obvious) |
4:13 | 7:9 | 0.282 |
| Intratumoral hemorrhage (n, present:absent) |
2:15 | 11:5 | 0.01 a |
| T1 hyperintense foci (n, present:absent) |
1:16 | 11:5 | <0.001 a |
| Intratumoral calcification (n = 29, present:absent) |
3:12 | 9:5 | 0.025 a |
| CT density (Hu) | 41.47 ± 5.22 | 33.64 ± 3.75 | <0.001 a |
| Internal capsule involvement (n, partly:completely) |
7:10 | 10:6 | 0.303 |
| Wallerian degeneration (n, subtle:obvious) |
5:12 | 12:4 | 0.015 a |
ADC, apparent diffusion coefficient; Hu, Hounsfield unit; MGCT, mixed germ cell tumor; SD, standard deviation.
Values are given as n, mean ± SD, or median (range).
a
significance values.