Table 6.
Prevalence of sinonasal anatomical variations (%) in previous studies
| Study | Year | Septal deviation |
Spur formation |
Concha bullosa |
Paradoxical middle concha |
Agger nasi cell | Haller cell | Onodi cell |
|---|---|---|---|---|---|---|---|---|
| Present study | 2019 | 95 | 53 | 27 | 15 | 44 | 13 | 29 |
| Bijani et al [8] | 2018 | 73.8 | - | 29.1 | 11.7 | 5.8 | 5.2 | - |
| Sarkar et al [29] | 2016 | 74.8 | - | 32.9 | 6.7 | 3.5 | 18 | 2.6 |
| Shpilberg et al [27] | 2015 | 98.4 | 32.3 | 26 | 15.6 | 83.3 | 39.1 | 12 |
| Khajavi et al [25] | 2015 | 49 | 12 | 26 | 5 | - | - | - |
| Kaygusuz et al [12] | 2014 | 72.3 | - | 41.5 | 13.8 | 64.6 | 13.8 | 9.2 |
| Shrikrishna et al [11] | 2013 | 30 | - | 38 | 5 | 6 | 11 | - |
| Fadda et al [5] | 2012 | 58.5 | - | 49.3 | 6.4 | 24.3 | 22.8 | 8.5 |
| Nitinavakarn et al [10] | 2005 | - | - | 50 | - | 92 | 23.9 | 25 |
| Arslan et al [26] | 1999 | - | - | 30 | 3 | - | 12 | 10 |
| Bolger et al [39] | 1991 | 96 | - | 53.6 | 27.1 | 98.5 | 45.9 | 11 |