Table 1. The Demographic Data and Conventional MR Imaging Features of GBMs and PCLs.
| GBM (n = 104) | PCL (n = 22) | P-value | |
|---|---|---|---|
| Age (y/o), median (Q1,Q3) | 60 (47, 70.3) | 59 (54.3, 71.8) | 0.57 |
| Gender, n (%) | 0.24 | ||
| Male | 58 (55.8%) | 9 (41%) | |
| Female | 46 (44.2%) | 13 (59%) | |
| Metastasis at diagnosis | 0.32 | ||
| Yes | 1 (1%) | 1 (4.5%) | |
| No | 103 (99%) | 21 (95.5%) | |
| Tumor size (cm), median (Q1,Q3) | 5.2 (4, 6) | 3.5 (2.6, 4.3) | < 0.01* |
| Tumor location, n (%) | 0.02* | ||
| Frontal | 38 (36.5%) | 9 (41%) | |
| Parietal | 25 (24%) | 3 (14%) | |
| Temporal | 27 (26%) | 2 (9%) | |
| Occipital | 3 (2.9%) | 0 (0) | |
| Basal ganglia | 2 (1.9%) | 4 (18%) | |
| Corpus callosum | 3 (2.9%) | 2 (9%) | |
| Thalamus | 5 (4.8%) | 1 (4.5%) | |
| Brainstem | 1 (1%) | 1 (4.5%) | |
| Tumor margin, n (%) | < 0.01* | ||
| Smooth | 5 (4.8%) | 10 (45%) | |
| Irregular | 99 (95.2%) | 12 (55%) | |
| Multiplicity, n (%) | 0.26 | ||
| Yes | 21 (20.2%) | 7 (32%) | |
| No | 83 (79.8%) | 15 (68%) | |
| Daughter nodule, n (%) | 0.08 | ||
| Yes | 22 (21.2%) | 1 (4.5%) | |
| No | 82 (78.9%) | 21 (95.5%) | |
| Tumor necrosis, n (%) | < 0.01* | ||
| Yes | 101 (97.1%) | 8 (36.4%) | |
| No | 3 (2.9%) | 14 (63.6%) | |
| Tumor enhancement, n (%) | 1 | ||
| Yes | 104 (100%) | 22 (100%) | |
| No | 0 | 0 | |
| Peritumoral edema, n (%) | 1 | ||
| Yes | 97 (93.3%) | 21 (95.5%) | |
| No | 7 (6.7%) | 1 (4.5%) |
* Statistical difference (P<0.05) in Fisher exact test or Wilcoxon–Mann–Whitney test.