Item/Anatomic Variant | Left Prevalence (n=323) | Right Prevalence (n=323) | Total Prevalence (n=646) | P Value, Right vs Left |
---|---|---|---|---|
1. Maxillary floor inferior to nasal floor | 263 (81.4) | 267 (82.7) | 530 (82.0) | 0.680 |
2. Supraorbital cell (air cell superior to anterior ethmoid artery) | 80 (24.8) | 76 (23.5) | 156 (24.1) | 0.777 |
3. Middle turbinate concha bullosa present | 98 (30.3) | 89 (27.6) | 187 (28.9) | 0.488 |
4. Frontal sinus present | 310 (96.0) | 307 (95.0) | 617 (95.5) | 0.572 |
5. Superior frontal sinus wall superior to supraorbital rim | 282 (87.3) | 274 (84.8) | 556 (86.1) | 0.362 |
6. Lateral frontal sinus wall lateral to medial edge of globe | 259 (80.2) | 254 (78.6) | 513 (79.4) | 0.624 |
7. Lateral frontal sinus wall lateral to midpupillary line | 85 (26.3) | 61 (18.9) | 146 (22.6) | 0.024 |
8. Lateral sphenoid sinus wall lateral to V2-VN line | 172 (53.3) | 145 (44.9) | 317 (49.1) | 0.034 |
9. Anterior clinoid process pneumatized | 49 (15.2) | 57 (17.6) | 106 (16.4) | 0.396 |
Note: Data are presented as n (%).
V2, maxillary nerve canal; VN, Vidian nerve canal.