Table 5: The frequency of metastatic spread (M) according to the primary tumor site.
|
M |
Site |
No |
% |
|
M0 |
Oral Cavity |
140 |
84.8 |
|
|
Larynx |
143 |
94.7 |
|
|
Oropharynx |
32 |
80 |
|
|
Hypopharynx |
35 |
83.3 |
|
|
Nasopharynx |
8 |
80 |
|
|
Unknown 1ry site |
22 |
35.5 |
|
M1 |
Oral Cavity |
15 |
9 |
|
|
Larynx |
7 |
4.6 |
|
|
Oropharynx |
6 |
15 |
|
|
Hypopharynx |
2 |
4.8 |
|
|
Nasopharynx |
2 |
20 |
|
|
Unknown 1ry site |
15 |
24.2 |
|
Mx |
Oral Cavity |
10 |
6.1 |
|
|
Larynx |
1 |
0.7 |
|
|
Oropharynx |
2 |
5 |
|
|
Hypopharynx |
2 |
4.8 |
|
|
Unknown 1ry site |
25 |
40.3 |