Table 1. Histology and histologic grade of patients studied.
| Histology | No. of patients |
|---|---|
| Astrocytoma | 194 |
| Oligodendroglioma | 189 |
| Oligoastrocytoma | 130 |
| Histologic grade | |
| Grade 3 | 264 |
| Grade 2 | 248 |
| NOS | 1 |
NOS, not otherwise specified
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