Table 1.
The prevalence of bony anatomic variations seen on sphenoid sinus
| Variation | Bilateral | Right side | Left side | Total |
|---|---|---|---|---|
| Pneumatization | ||||
| Pterygoid Process Anterior Clinoid Process |
26 (25.2%) 15 (14.6%) |
6 (5.8%) 8 (7.8%) |
10 (9.7%) 11 (10.7%) |
42 (38.9%) 34 (33.1%) |
| Protrusion | ||||
|
Vidian Canal Carotid Canal Optic Canal Foramen Rotundum |
25 (24.3%) 26 (25.2%) 15 (4.6%) 10 (9.7%) |
5 (4.9%) 4 (3.9%) 3 (2.9%) 6 (5.8%) |
9 (8.7%) 10 (9.7%) 16 (15.5%) 8 (7.8%) |
39 (37.9%) 40 (38.8%) 34 (33%) 24 (23.3%) |
| Septa | 67 (65.0%) | 3 (2.9%) | 2 (1.9%) | 72 (69.8%) |