Stage grouping |
Anatomical site |
Number of
tumours (%) |
I |
Oral cavity |
34 (3.93) |
|
Larynx |
23 (2.66) |
|
Other |
5 (0.58) |
II |
Oral cavity |
24 (2.81) |
|
Larynx |
13 (1.52) |
|
Oropharynx |
8 (0.94) |
|
Other |
8 (0.94) |
III |
Larynx |
33 (3.86) |
|
Oral cavity |
20 (2.34) |
|
Oropharynx |
18 (2.10) |
|
Nasopharynx |
8 (0.94) |
|
Other |
13 (1.52) |
IVA |
Oral cavity |
207 (24.24) |
|
Oropharynx |
97 (11.36) |
|
Larynx |
93 (10.89) |
|
Hypopharynx |
27 (3.16) |
|
Salivary gland |
14 (1.64) |
|
Sinuses |
14 (1.64) |
|
Other |
22 (2.58) |
IVB |
Oropharynx |
28 (3.28) |
|
Oral cavity |
25 (2.92) |
|
Hypopharynx |
16 (1.87) |
|
Larynx |
11 (1.29) |
|
Sinuses |
10 (1.17) |
|
Other |
22 (2.58) |
IVC |
Larynx |
14 (1.64) |
|
Oropharynx |
11 (1.29) |
|
Unknown primary |
8 (0.94) |
|
Hypopharynx |
6 (0.70) |
|
Oral cavity |
5 (0.58) |
|
Other |
9 (1.05) |
IV |
Sinuses |
3 (0.35) |
|
Base of tongue |
1 (0.12) |
|
Other |
3 (0.35) |
Unstaged |
Oral cavity |
5 (0.58) |
|
Oropharynx |
3 (0.35) |
|
Other |
4 (0.47) |