Table 2 Main preoperative and postoperative symptoms and signs
| Symptoms/Signs | Pre-operation | Post-operationa | No improvementb | I/Rb |
|---|---|---|---|---|
| (n = 64) | (n = 63) | (n = 53) | (n = 53) | |
| CN III impairment | 5 | 17 | 3 | 13 |
| CN IV impairment | 2 | 4 | 0 | 4 |
| CN V impairment | 42 | 37 | 10 | 25 |
| CN VI impairment | 7 | 14 | 4 | 9 |
| CN VII impairment | 16 | 18 | 10 | 8 |
| Lower cranial nerve impairment | 32 | 16 | 5 | 9 |
| Hemiparesis | 18 | 23 | 4 | 16 |
| Disequilibrium | 37 | 18 | 5 | 10 |
| Headache | 32 | 7 | 3 | 3 |