Table 1.
Characteristics of the study sample.
| Patients | Blood case | Tissue case | Blood control | Tissue control |
|---|---|---|---|---|
| Sex | ||||
| Male | 9 (39.1) | 3 (42.9) | 10 (41.7) | 3 (75) |
| Female | 14 (60.9) | 4 (57.1) | 14 (58.3) | 1 (25) |
| Smoker | ||||
| Yes | 4 (17.4) | 2 (28.6) | 5 (20.8) | 1 (25) |
| No | 19 (82.6) | 5 (71.4) | 19 (79.2) | 3 (75) |
| Mean age | 70.21 (±9.23) | 62.85 (±6.46) | 33.83 (±13.99) | 48.25 (±23.62) |
| Lesion localisation | ||||
| Tongue | 8 (34.8) | 1 (14.2) | ||
| Gum | 3 (13) | 3 (42.8) | ||
| Buccal mucosa | 2 (8.7) | – | ||
| Mouth floor | – | 1 (14.3) | ||
| Multiple | 10 (43.5) | 2 (28.6) | ||
| Leukoplakia analysis | ||||
| Nodular | 9 (39.1) | 1 (33.3) | ||
| Verrucous | 14 (60.9) | 2 (66.6) | ||
| T stage | ||||
| T1–T2 | 3 (100) | 3 (75) | ||
| T3–T4 | – | 1 (25) | ||
| Recurrencea | ||||
| Yes | 19 (95) | 4 (57.1) | ||
| No | 1 (5) | 3 (42.9) | ||
Values are presented as N (%).
aDecreased number of patients due to death.