Table I.
Demographic and clinicopathological characteristics of 77 patients with oral squamous cell carcinoma.
| Clinicopathological factors | Values |
|---|---|
| Total, n | 77 |
| Observation period, days [range (mean)] | 144–2,762 (1,510) |
| Age, years [range (mean)] | 22–86 (66) |
| Gender, n (%) | |
| Male | 49 (63.6) |
| Female | 28 (36.4) |
| Site, n (%) | |
| Tongue | 38 (49.4) |
| Gingiva | 27 (35.1) |
| Oral floor | 9 (11.7) |
| Buccal mucosa | 3 (3.9) |
| Tumor sizea, mm [range (mean)] | 8–52 (27.1) |
| ≤20 mm, n (%) | 25 (32.5) |
| 21–30 mm, n (%) | 26 (33.8) |
| 31–40 mm, n (%) | 18 (23.4) |
| >40 mm, n (%) | 8 (10.4) |
| Tumor statusb, n (%) | |
| T1 | 24 (31.2) |
| T2 | 35 (45.5) |
| T3 | 3 (3.9) |
| T4 | 15 (19.5) |
| Lymph node metastasisc, n (%) | |
| N0 | 37 (48.1) |
| N1 | 10 (13.0) |
| N2 | 30 (39.0) |
| N3 | 0 (0.0) |
| Histological grade (YK4)d, n (%) | |
| 2–3 | 31 (40.3) |
| 4c-d | 46 (59.7) |
| Margin statuse, n (%) | |
| Negative | 72 (93.5) |
| Positive | 5 (6.5) |
| Primary site recurrence, n (%) | |
| Negative | 71 (92.2) |
| Positive | 6 (7.8) |
| Distant metastasis, n (%) | |
| Negative | 72 (93.5) |
| Positive | 5 (6.5) |
| Disease-specific deathf, n (%) | |
| Alive | 63 (81.8) |
| Succumbed | 14 (18.2) |
a
Major width of the tumor.
b
Tumor (T)
c
lymph node (N) category according to the Union for International Cancer Control Tumor-Node-Metastasis classification of malignant tumors of the lip and oral cavity.
d
Histopathological classification of oral squamous cell carcinoma (YK grade) according to Yamamoto et al (9).
e
Histological tumor positiveness of the surgical margin.
f
Fatality outcome from uncontrollable oral squamous cell carcinoma.