Table 4 Prevalence of intersphenoid septum and accessory sphenoidal septa
From: Risky anatomical variations of sphenoid sinus and surrounding structures in endoscopic sinus surgery
Intersphenoid septae | Men n (%)a | Women n (%)a | Total (n = 230) n (%)b | Insertion on ICA n (%) | Insertion on ONC n (%) | ||
Midline | 47 (51.7) | 44 (48.3) | 91 (39.6) | Protusion | Normal | Protusion | Dehiscence |
Deviate R | 35 (49.3) | 36 (50.7) | 71 (30.8) | 12/71 (16.9) | 5/71 (7.0) | 6/71 (8.4) | 2/71 (2.8) |
Deviate L | 38 (55.9) | 30 (44.1) | 68 (29.6) | 9/68 (13.2) | 4/68 (5.9) | 4/68 (5.9) | – |
Accessory septae | 30 (13) | 40 (17.4) | 70 (30.4) | Insertion on ICA | |||
R- Protusion 19/70 (27.1) | L- Protusion 26/70 (37.1) | B- Protusion 16/70 (22.8) | |||||
Insertion on ON | |||||||
R- Protusion 11/70 /15.7) | L- Protusion 10/70 (14.3) | B- Protusion 7/70 (10) | R- Dehiscence 1/70 (1.4) | ||||