Table 1.
Demographics and clinical characteristics of NF2 and sporadic VSs
| Characteristic | No. | |
| NF2 (n = 17) | Sporadic (n = 10) | |
| Age, y | ||
| Median | 25 | 34 |
| Range | 8–52 | 26–42 |
| Sex, % | ||
| Male | 10 (58.8) | 5 (50.0) |
| Female | 7 (41.2) | 5 (50.0) |
| Tumor localization, % | ||
| Left ear | 8 (47.1) | 4 (40.0) |
| Right ear | 9 (52.9) | 6 (60.0) |
| Tumor volume, mm3 | ||
| Average | 57,802 | 27,639 |
| Range | 5,400–125,000 | 960–52,500 |
| Cyst formation, % | 11 (64.7) | 8 (80.0) |
| Brainstem compression, % | 13 (76.5) | 7 (70.0) |
| Tumor growing time, mo | ||
| Average | 65.7 | 27 |
| Range | 4–240 | 6–60 |