Table 1 Clinicopathologic features
Characteristic | Number of cases |
|---|---|
Age | Â |
   < 60 years | 27 |
   > 60 years | 51 |
Sex | Â |
   Male | 54 |
   Female | 24 |
Tumor site | Â |
   Larynx | 26 |
   Tongue | 8 |
   Skin and mucosa | 44 |
Histologic grade | Â |
   Differentiated (G1) | 39 |
   Poorly differentiated (G2, G3) | 39 |
Mode of tumor invasion | Â |
   Well defined (1 + 2) | 18 |
   No distinct border (3) | 43 |
   Diffuse invasion (4a + 4b) | 17 |