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Radiotherapy outcome for acoustic neuromas.
| Grade | Description |
|---|---|
| 1 | Tumor control, tumor diameter is reduced by more than 2 mm, and the volume is reduced by more than 10% |
| 2 | Tumor stability, tumor diameter reduction is less than 2 mm, and the volume reduction is less than 10% |
| 3 | Tumor growth, the tumor does not shrink or tumor size re-increases after shrinking |
