| start within the brain | 0.30 |
| originate in the spine | 0.28 |
| invade cartilage | 0.25 |
| spread to other parts o… | 0.23 |
| originate in spinal cord | 0.21 |
| absorb radioactive mate… | 0.16 |
| rare | 0.65 |
| benign | 0.60 |
| malignant | 0.43 |
| large | 0.36 |
| small | 0.30 |
| undetectable | 0.25 |
| unresectable | 0.25 |
| removed | 0.71 |
| caused by growth among … | 0.43 |
| resected | 0.30 |
| limited to the kidney | 0.30 |
| detected | 0.28 |