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Intratumoral calcification
| Type | Present | Absent |
|---|---|---|
| Grade I gliomas | 00 | 03 |
| Grade II astrocytoma | 02 | 11 |
| Grade III anaplastic astrocytoma | 01 | 07 |
| Grade IV glioblastoma multiforme | 00 | 12 |
| Oligodendroglioma | 03 | 00 |
| Ependymoma | 01 | 01 |
| Choroid plexus papilloma | 00 | 01 |
| Total | 07 | 35 |
