Table 1.
Frequency of incidental of findings among the 6 designated anatomic regions
| Incidental finding category | Frequency (n) | Percentage of IFs |
|---|---|---|
| Cervical vertebrae | 11 | 1.3 |
| Cervical vertebrae fusion | 5 | 0.59 |
| Cervical vertebral flattening | 1 | 0.12 |
| Cervical osteoarthritis | 1 | 0.12 |
| Mediolateral rotation (to L) of C2-C3 in relation to C1 | 1 | 0.12 |
| Bony ossicle in C1-C2 region | 1 | 0.12 |
| Posterior ponticle of C1 | 2 | 0.24 |
| Dentoalveolar | 124 | 14.7 |
| Supernumerary | 6 | 0.71 |
| Hypodontia (excluding third molars) | 37 | 4.39 |
| Microdontia | 4 | 0.48 |
| Impactions | 28 | 3.33 |
| Enamel pearl | 1 | 0.12 |
| Gemination | 1 | 0.12 |
| Retained primary tooth/fragment | 6 | 0.71 |
| Dilaceration | 1 | 0.12 |
| Severe root shortening (localized) | 1 | 0.12 |
| Ectopic position | 2 | 0.24 |
| Idiopathic osteosclerosis (DBI) | 16 | 1.90 |
| Odontogenic cyst | 1 | 0.12 |
| Simple bone cyst | 2 | 0.24 |
| Buccal bifurcation cyst | 1 | 0.12 |
| Torus mandibularis | 1 | 0.12 |
| Periapical cemento-ossesous dysplasia | 2 | 0.24 |
| External root resorption | 5 | 0.59 |
| Periapical rarefying osteitis | 8 | 0.95 |
| Periapical sclerosing osteitis | 1 | 0.12 |
| Naso-oropharyngeal airway | 356 | 42.3 |
| Choanal-retrochoanal polyp | 1 | 0.12 |
| Meatal obliteration | 1 | 0.12 |
| Adenoid hypertrophy | 154 | 18.3 |
| Lingual tonsil hypertrophy | 55 | 6.53 |
| Palatine tonsil hypertrophy | 8 | 0.95 |
| Concha bullosa | 30 | 3.56 |
| Nasal mucosal thickening; rhinitis | 25 | 2.97 |
| Nasal septal deviation | 45 | 5.34 |
| Nasal septal deviation (with bone spur) | 22 | 2.61 |
| Turbinate hypertrophy | 5 | 0.59 |
| Nasal polyps | 1 | 0.12 |
| Irregular soft tissue border of naso-oropharynx | 2 | 0.24 |
| Dystrophic calcification of tonsils | 5 | 0.59 |
| Concha enlargement | 1 | 0.12 |
| Opacification of the middle and superior nasal meatuses | 1 | 0.12 |
| Paranasal sinuses | 260 | 30.9 |
| Localized inflammatory conditions (mucositis-sinusitis) | 152 | 18.1 |
| Pansinusitis | 11 | 1.31 |
| Ostia blockage | 11 | 1.31 |
| Retention pseudocyst | 58 | 6.89 |
| Sinus hypoplasia | 14 | 1.66 |
| Sinus pnuematization | 11 | 1.31 |
| Sinus aplasia | 1 | 0.12 |
| Accessory ostia | 1 | 0.12 |
| Antrolith | 1 | 0.12 |
| Surrounding soft/hard tissues | 34 | 4.0 |
| Osteoma | 1 | 0.12 |
| Fibrous dysplasia | 5 | 0.59 |
| Jugular bulb pseudolesion | 4 | 0.48 |
| Pnuematization of mastoid air cells | 12 | 1.43 |
| Enlarged sella turcica | 3 | 0.36 |
| Soft tissue polyp | 1 | 0.12 |
| Ventriculoperitoneal shunt | 1 | 0.12 |
| Pineal gland calcification | 1 | 0.12 |
| Osteoma cutis | 1 | 0.12 |
| Calcified stylohyoid ligament | 2 | 0.24 |
| Dystrophic calcification of lymph node | 1 | 0.12 |
| Enlarged incisive (naso-palatine) canal | 1 | 0.12 |
| Depression/notch along the anterior surface of clivus | 1 | 0.12 |
| Temporomandibular joint | 54 | 6.4 |
| Condylar hypoplasia | 16 | 1.90 |
| Physiologic remodeling (flat margins, subchondral sclerosis) | 19 | 2.26 |
| Degenerative changes (osteophytes, erosions) | 18 | 2.14 |
| Bifid condyle | 1 | 0.12 |