Table 1
Clinical data of patients with leukoplakia and head and neck squamous cell carcinomas used in the study
| Tumour | Age (years)/Sex | Site | Stage | Histopathology | Lymph node | Tobacco |
|---|---|---|---|---|---|---|
| Site: AL, alveoli; BM, buccal mucosa; MD, mandible, MX, maxilla; P, palate; TNG, tongue; TNS, tonsil. Histopathology: MDSCC, moderately differentiated squamous cell carcinoma; MLD, mild dysplasia; MOD, moderate dysplasia; PDSCC, poorly differentiated squamous cell carcinoma; SD, severe dysplasia; WDSCC, well differentiated squamous cell carcinoma. Tobacco: +, consumed at least 10–15 cigarettes/biri or equivalent amount of chewable tobacco each day for at least 10 years. Node: +, lymph node formation with tumour tissue. U, not known. No history is available for the patients 4717b, 4717g, 2917, and 2927. | ||||||
| L48 | 59/F | BM | – | MLD | – | + |
| L49 | 52M | BM | – | MOD | – | + |
| L50 | 64/M | BM | – | MLD | – | + |
| L51 | 74/M | BM | – | SD | – | + |
| L52 | 45/M | BM | – | MOD | – | + |
| L53 | 49/M | BM | – | MOD | – | + |
| L54 | 44/M | BM | – | MOD | – | + |
| L55 | 44/M | BM | – | SD | – | + |
| L56 | 40/M | BM | – | MOD | – | + |
| L57 | 40/M | BM | – | MOD | – | + |
| 125 | 35/F | BM | – | SD | – | – |
| 2024 | 52/M | BM | – | SD | – | – |
| 3037 | 55/M | BM | – | SD | – | – |
| 1491 | 58/M | BM | I | WDSCC | + | + |
| 4119 | 60/M | BM | I | WDSCC | – | – |
| 4456 | 45/M | BM | I | WDSCC | + | + |
| 149 | 38/M | MD | II | WDSCC | – | – |
| 222 | 60/F | TNG | II | WDSCC | – | – |
| 410 | 57/F | TNG | II | WDSCC | + | – |
| 558 | 59/M | AL | II | WDSCC | – | + |
| 825 | 32/M | P | II | PDSCC | – | – |
| 939 | 50/M | BM | II | MDSCC | – | – |
| 1047 | 53/M | BM | II | WDSCC | – | + |
| 1864 | 45/M | MX | II | MDSCC | + | + |
| 2030 | 73/M | TNG | II | MDSCC | + | + |
| 2539 | 48/M | AL | II | WDSCC | U | U |
| 3070 | 48/M | AL | II | WDSCC | + | + |
| 5959 | 28/M | TNG | II | MDSCC | – | – |
| 7216 | 56/M | MX | II | MDSCC | – | + |
| 292 | 48/M | LX | III | MDSCC | – | + |
| 308 | 42/M | BM | III | MDSCC | – | + |
| 326 | 70/M | MX | III | WDSCC | – | – |
| 615 | 45/M | TNG | III | WDSCC | – | + |
| 693 | 50/M | LX | III | MDSCC | – | + |
| 4332 | 54/M | BM | III | WDSCC | + | + |
| 5090 | 49/M | BM | III | WDSCC | + | + |
| 1295 | 75/M | LX | III | PDSCC | – | + |
| 1367 | 60/M | TNS | III | MDSCC | – | – |
| 2323 | 62/M | MX | III | WDSCC | – | + |
| 2592 | 70/M | BM | III | MDSCC | + | + |
| 2772 | 41/M | BM | III | WDSCC | + | + |
| 4248 | 36/M | BM | III | MDSCC | + | + |
| 5325 | 46/M | TNG | III | WDSCC | + | + |
| 5364 | 37/M | MX | III | MDSCC | + | – |
| 7428 | 40/M | BM | III | WDSCC | + | – |
| 7783 | 45/F | TNS | III | WDSCC | + | + |
| 311 | 30/M | BM | IV | WDSCC | + | – |
| 802 | 50/M | TNG | IV | MDSCC | + | + |
| 1101 | 58/M | LX | IV | MDSCC | – | + |
| 1445 | 70/M | LX | IV | WDSCC | – | + |
| 2618 | 42/M | MX | IV | PDSCC | + | + |
| 4904 | 60/M | MX | IV | MDSCC | + | + |
| 5184 | 60/M | BM | IV | MDSCC | – | – |
| 1494 | 50/M | BM | IV | MDSCC | U | U |
| 4188 | 65/M | BM | I | MDSCC | + | – |
| 538 | 50/M | MX | U | WDSCC | U | + |
| 598 | 45/M | Neck | U | PDSCC | U | U |
| 951 | 73/M | U | U | WDSCC | – | + |
| 1068 | 58/M | MX | U | WDSCC | – | – |
| 1128 | 56/M | MX | U | WDSCC | – | + |
| 1166 | 28/M | MX | U | WDSCC | – | + |
| 1552 | 20/F | TNG | IV | MDSCC | + | – |
| 2507 | 30/F | TNG | U | U | + | – |
| 2579 | 49/M | MX | I | WDSCC | – | U |
| 2807 | 52/M | TNG | U | MDSCC | + | + |
| 2888 | 40/M | MX | I | WDSCC | + | U |
| 3280 | 60/M | BM | U | U | U | + |
| 5943 | U/M | BM | U | U | U | + |
| 7999 | 70/M | Neck | U | PDSCC | + | + |
