Table 4.
Outcome data
| Follow-up | ||
|---|---|---|
| Duration | mean | 1.5 y |
| range | 0.5–3.5 y | |
| Tumor volume | increased | 0 |
| stable | 6 | |
| decreased | 0 | |
| Hearing status | NA (cophosis before GKR) | 2 |
| stable (GR 2) | 1 | |
| stable (GR 3) | 1 | |
| worsened (GR 2→3) | 1 | |
| worsened (GR 3→5) | 1 | |
| Tinnitus | NA (not present before GKR) | 5 |
| improved | 0 | |
| stable | 1 | |
| worsened | 0 | |
| Imbalance | NA (not present before GKR) | 3 |
| improved | 1 | |
| stable | 2 | |
| worsened | 0 | |
| Vertigo | NA (not present before GKR) | 5 |
| improved | 0 | |
| stable | 1 | |
| worsened | 0 | |
NA = not applicable ; GR = Gardner-Robertson classification; GKR = Gamma Knife Radiosurgery