Table 6.
Association between pneumatization of the temporal bone and some selected vascular variants of the sigmoid sinus, jugular bulb, and internal carotid artery.
| Right temporal bone pneumatization | Left Temporal bone pneumatization | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Hypo (N = 28) | Moderate (N = 44) | Good (N = 45) | Hyper (N = 65) | p-value | Hypo (N = 28) | Moderate (N = 44) | Good (N = 45) | Hyper (N = 65) | p-value | |
| SS | 0.070 (NSA) | 0.645 (NSA) | ||||||||
| Half-moon | 4 (14.8%) | 2 (4.5%) | 1 (2.3%) | 0 (0.0%) | 3 (11.1%) | 2 (4.9%) | 1 (2.3%) | 2 (2.7%) | ||
| Protrusive | 7 (25.9%) | 19 (43.2%) | 16 (37.2%) | 27 (45.0%) | 9 (33.3%) | 13 (31.7%) | 13 (30.2%) | 21 (28.4%) | ||
| Saucer | 16 (59.3%) | 23 (52.3%) | 26 (60.5%) | 33 (55.0%) | 15 (55.6%) | 26 (63.4%) | 29 (67.4%) | 51 (68.9%) | ||
| JB | < 0.001** | < 0.001** | ||||||||
| Flat JB | 5 (18.5%) | 4 (6.8%) | 3 (6.7%) | 1 (2.2%) | 5 (10.7%) | 4 (9.8%) | 3 (0.0%) | 0 (6.9%) | ||
| High JB | 2 (7.4%) | 9 (20.0%) | 10 (22.7%) | 38 (63.3%) | 6 (21.4%) | 5 (12.2%) | 7 (16.3%) | 37 (51.4%) | ||
| JB dehiscence | 0 (0.0%) | 0 (0.0%) | 2 (4.5%) | 4 (6.7%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 1 (1.4%) | ||
| ICA dehiscence | 0.002* | 0.009* | ||||||||
| Yes | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 10 (16.8%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 3 (4.0%) | ||
Fisher’s test showing significant association at *p < 0.01, **p < 0.001.
NSA no significant association, SS sigmoid sinus, JB jugular bulb, ICA internal carotid artery.