Table 2.
Comparison of MRI morphological characteristics of LGGs and HGGs.
| Parameters | LGGs (n = 43) | HGGs (n = 123) | χ2 /Z value | P value | |
|---|---|---|---|---|---|
| Hemorrhage# | Present | 1 (2.3%) | 29 (24.4%) | 9.900 | 0.002** |
| None | 41 (97.7%) | 90 (75.6%) | |||
| Cystic lesion† | Present | 15 (34.9%) | 64 (54.2%) | 4.723 | 0.030* |
| None | 28 (65.1%) | 54 (45.8%) | |||
| Peritumoral edema | None | 25 (58.1%) | 18 (14.6%) | -5.010 | < 0.001*** |
| Mild | 8 (18.6%) | 35 (28.5%) | |||
| Severe | 10 (23.3%) | 70 (56.9%) | |||
| Tumor boundary | Clear | 28 (65.1%) | 49 (39.8%) | 8.187 | 0.004** |
| Blur | 15 (34.9%) | 74 (60.2%) | |||
| Enhancement pattern‡ | No enhancement | 27 (62.8%) | 13 (10.7%) | 52.773 | < 0.001*** |
| Patchy enhancement | 13 (30.2%) | 41 (33.9%) | |||
| Rim enhancement | 3 (7.0%) | 67 (55.4%) | |||
| Distribution of lesions | Single lobe | 18 (41.9%) | 28 (22.8%) | 20.940 | < 0.001*** |
| Trans-lobe growth with corpus callosum involvement | 5 (11.6%) | 26 (21.1%) | |||
| Trans-lobe growth with insula involvement | 5 (11.6%) | 34 (27.6%) | |||
| Trans-lobe growth | 2 (4.7%) | 22 (17.9%) | |||
| Thalamus or brain stem | 13 (30.2%) | 13 (10.6%) | |||
#Hemorrhage status was evaluated as uncertain in a total of 5 patients.
†Cystic lesion status was evaluated as uncertain in a total of 5 patients.
‡Two patients did not undergo MRI enhancement examination.
Significance level markers P < 0.05*, P < 0.01**, P < 0.001***.