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Percentage of EGFR staining (immunoreactivity) of meningioma samples, n (%).
| Pathology | Percentage of EGFR Staining | ||||
|---|---|---|---|---|---|
| 1 (0-20%) | 2 (21-40%) | 3 (41-60%) | 4 (61-80%) | 5 (81-100%) | |
| Benign | 18 (32) | 15 (26) | 15 (26) | 7 (12) | 2 (4) |
| Atypical | 8 (35) | 6 (26) | 4 (17) | 3 (13) | 2 (9) |
| Malignant | 5 (100) | 0 | 0 | 0 | 0 |
