Variables

Number

Percentage

Radiological diagnosis

Chronic sinusitis

102

49.5

Sino nasal polyp/polyposis

39

19.4

Aspergillosis

6

2.9

Tumor

5

2.4

Acute sinusitis

3

1.5

Other diagnosis

18

8.7

Normal CT Scan result

52

25.2

Lesions topography

Maxillary sinus

153

74.3

Anterior ethmoidal sinus

104

50.5

Frontal sinus

90

43.7

Sphenoidal sinus

85

41.3

Posterior ethmoidal sinus

61

29.6

No lesion

52

25.2

Anatomical variants

Concha bullosa

25

12.1

Septal deviation with bone spur

17

8.3

Carotid protrusion

8

3.9

AggerNassi

4

1.9

Clinoid apophyse pneumatisation

2

1

Dehiscence of the planum bone

1

0.5

No anatomical variant

157

76.2