Table 3 Number, percentage and mean duration of the malignant transformation for the 219 potentially malignant oral epithelial lesions with different histological diagnoses
Histological diagnosis | Malignant transformation | Mean duration of malignant transformation |
|---|---|---|
N (%) | (months) | |
Epithelial dysplasia with oral submucous fibrosis | 9/186 (4.84) | 42.47 |
Epithelial dysplasia with hyperkeratosis or epithelial hyperplasia | 63/957 (6.58) | 27.86 |
Oral submucous fibrosis | 37/994 (3.72) | 37.42 |
Lichen planus | 2/381 (0.52) | 8.07 |
Verrucous hyperplasia | 59/869 (6.79) | 33.49 |
Hyperkeratosis or epithelial hyperplasia | 49/1684 (2.91) | 36.55 |
Overall | 219/5071 (4.32) | 33.56 |