Table 2 Extension of tumors from the clival region into the adjacent anatomical regions
Zone of adjacent extension of the tumor | Number of cases | Percent |
|---|---|---|
Cavernous sinus (unilateral extension) | 25 | 17.9 |
Turkish saddle | 13 | 9.3 |
Parasellar region (bilateral extension into the cavernous sinuses) | 12 | 8.6 |
Suprasellar region | 20 | 14.3 |
Apex of the temporal bone pyramid | 9 | 6.4 |
Cerebellopontine angle | 8 | 5.7 |
Sphenoidal sinus | 27 | 19.3 |
Nasopharynx | 7 | 5.0 |
Oropharynx | 3 | 2.1 |
Posterior ethmoidal air cells | 4 | 2.9 |
Orbit region | 2 | 1.4 |
Inner opening of the auditory tube | 3 | 2.1 |
Temporal lobe, subcortical structures | 4 | 2.9 |