TABLE 2.
Characteristic | Category | N (%) |
---|---|---|
Tumor laterality | Left | 94 (39.8) |
Right | 96 (40.7) | |
Midline | 46 (19.5) | |
Skull base | Yes | 140 (59.3) |
No | 96 (40.7) | |
Calcification | Absent | 139 (66.5) |
Partial | 45 (21.5) | |
Diffuse | 25 (12.0) | |
Tumor signal intensity | Hyperintense | 120 (63.5) |
Isointense | 50 (26.5) | |
Hypointense | 19 (10.0) | |
Peritumoral edema | Yes | 120 (61.5) |
No | 75 (38.5) | |
Peritumoral edema relative to tumor volume (%) | 0–5 | 14 (12.1) |
6–33 | 26 (34.5) | |
34–66 | 17 (14.7) | |
67–100 | 12 (10.3) | |
>100% | 47 (40.5) | |
Edema volume (cm3) | Median (IQR) | 39.1 (6.5–85.6) |
Edema grade | 1 | 12 (10.3) |
2 | 35 (30.2) | |
3 | 69 (59.5) | |
Edema index | Median (IQR) | 0.7 (0.1–1.7) |
Bone invasion | Yes | 67 (33.2) |
No | 135 (66.8) | |
Hyperostosis | Yes | 59 (29.2) |
No | 143 (70.8) | |
Sinus invasion | Separate | 103 (48.4) |
Direct contact | 35 (16.4) | |
Invading | 75 (35.2) | |
Compressing critical neurovascular structures | Yes | 83 (38.6) |
No | 132 (61.4) | |
Preoperative tumor volume (cm3) | Median (IQR) | 34.0 (16.0–63.0) |
Preoperative tumor diameter (mm) | Median (IQR) | 22.7 (10.6–42.0) |