Type of lesion of the oral mucosa | Number | Percentage (%) |
Black villous tongue | 32 | 50.79 |
Neoplastic ulceration | 14 | 22.22 |
Contact ulceration | 9 | 14.29 |
Leucoplakia | 4 | 6.36 |
Lichen planus | 2 | 3.17 |
Tabacco melanosis | 2 | 3.17 |