Primary tumor extension | MSI - | MSI + | |||
---|---|---|---|---|---|
No. | % | No. | % | Pvalue | |
Intracranial | 28 | 5.0 | 56 | 31.1 | <0.001 |
Prevertebral space | 213 | 38.0 | 156 | 86.7 | <0.001 |
Base of skull bony structure | 260 | 46.3 | 159 | 88.3 | 0.002 |
Paranasal sinuses | 37 | 6.5 | 52 | 28.9 | 0.020 |
Parapharyngeal space | 334 | 59.4 | 158 | 87.8 | 0.045 |