Table 2.
Clinicopathological features, anatomical site, and evolution of the lesions according to the group.
| Clinicopathological features, anatomical site, and evolution of the lesions | Group I Up to 40 years-old | Group II Above 41 years-old | p | |||
|---|---|---|---|---|---|---|
| N | % | N | % | |||
| Clinical appearance | White | 65 | 95.6 | 485 | 85.7 | 0.034 |
| Red / White-red | 3 | 4.4 | 81 | 14.3 | ||
| Not informed | 0 | - | 6 | - | ||
| Clinical diagnosis | Leukoplakia | 66 | 97.1 | 501 | 87.6 | 0.121 |
| Erythroplakia | 1 | 1.5 | 17 | 3.0 | ||
| Leukoerythroplakia | 1 | 1.5 | 54 | 9.4 | ||
| Histology | Non-dysplastic | 60 | 88.2 | 418 | 73.1 | 0.010 |
| Epithelial dysplasia | 8 | 11.8 | 126 | 22.02 | ||
| SCC | 0 | 0 | 28 | 4.8 | ||
| Grouped anatomical site | Low-risk | 43 | 65.2 | 318 | 57.2 | 0.269 |
| High-risk | 23 | 34.8 | 238 | 42.8 | ||
| Not informed | 2 | - | 16 | - | ||
| Evolution | No recurrence | 1 | 9.1 | 22 | 9.9 | - |
| Clinical improvement | 1 | 9.1 | 7 | 3.1 | ||
| Clinical worsening | 0 | 0 | 33 | 14.8 | ||
| Relapse | 0 | 0 | 10 | 4.5 | ||
| New lesions | 2 | 18.2 | 45 | 20.2 | ||
| Malignant transformation | 1 | 9.1 | 35 | 15.7 | ||
| Unchanged | 6 | 54.5 | 71 | 31.8 | ||
| Total | 11 | 100 | 223 | 100 | ||
| Grouped evolution | Favorable | 8 | 72.7 | 100 | 44.8 | 0.028 |
| Unfavorable | 2 | 18.2 | 88 | 39.5 | ||
| Malignant transformation | 1 | 9.1 | 35 | 15.7 | ||
p, chi-square.