| Variables | Number | Pourcentage |
| Macroscopical aspects | ||
| Burgeoning tumor | 20 | 58.8 |
| Ulcero-burgeoning tumor | 10 | 29.4 |
| ulcero-infiltrating tumor | 4 | 11.8 |
| Histopathological aspects | ||
| Squamous cell carcinoma | 30 | 88.2 |
| Adenocarcinoma | 4 | 11.8 |