Table II.
Clinicopathological features of the patients in the case group (n=505).
| Characteristic | Case, n (%) |
|---|---|
| Site | |
| Tongue | 161 (31.9) |
| Buccal mucosa | 131 (25.9) |
| Gingiva | 84 (6.6) |
| Floor of mouth | 61 (12.1) |
| Palate | 35 (6.9) |
| Lip | 24 (4.8) |
| Maxillary sinus | 9 (1.8) |
| Tumor size | |
| T1+T2 | 304 (60.2) |
| T3+T4 | 201 (39.8) |
| Lymph node metastases | |
| N0 | 332 (65.7) |
| N+ | 173 (34.3) |
| Clinical stage | |
| Stage I + II | 244 (48.3) |
| Stage III + IV | 261 (51.7) |
| Pathological stage | |
| SCCI (highly differentiated) | 358 (70.9) |
| SCCII (moderately differentiated) | 128 (25.3) |
| SCCIII (poorly differentiated) | 19 (3.8) |
SCC, squamous cell carcinoma.