Characteristics of incidence of head and neck cancers
| Characteristics | All subjects (n=12 729) | CT-scan population (n=4804) |
| Incidence of the head and neck cancers (yes) | 146 (1.1%) | 50 (1.0%) |
| C00 Lip | 1 (0.7%) | – |
| C01 Base of tongue | 5 (3.4%) | 2 (4.0%) |
| C02 Other and unspecified parts of tongue | 8 (5.5%) | 2 (4.0%) |
| C03 Gum | 1 (0.7%) | – |
| C04 Floor of mouth | 6 (4.1%) | 3 (6.0%) |
| C05 Palate | 1 (0.7%) | 1 (2.0%) |
| C06 Other and unspecified parts of mouth | 8 (5.5%) | 2 (4.0%) |
| C07 Parotid gland | 9 (6.2%) | 2 (4.0%) |
| C08 Other and unspecified major salivary glands | 1 (0.7%) | – |
| C09 Tonsil | 14 (9.6%) | 6 (12.0%) |
| C10 Oropharynx | 16 (11.0%) | 6 (12.0%) |
| C11 Nasopharynx | 4 (2.7%) | 1 (2.0%) |
| C12 Piriform sinus | 13 (8.9%) | 4 (8.0%) |
| C13 Hypopharynx | 4 (2.7%) | 1 (2.0%) |
| C14 Other and ill-defined sites in the lip, oral cavity and pharynx | 6 (4.1%) | – |
| C30 Nasal cavity and middle ear | 3 (2.0%) | – |
| C31 Accessory of sinuses | 2 (1.4%) | – |
| C32 Larynx | 44 (30.1%) | 20 (40.0%) |