Characteristic | N (%) |
---|---|
Age | Â |
Median (range) | 59.5 years (22–87) |
Gender | |
 Female | 20 (37) |
 Male | 34 (63) |
Tumor Site | |
 Oral Tongue | 21 (39) |
 Buccal Mucosa | 10 (18.5) |
 Floor of Mouth | 2 (4) |
 Hard Palate | 3 (5) |
 Gingiva | 10 (18.5) |
 Retromolar Trigone | 8 (15) |
Histologic Differentiation | |
 Poor | 13 (24) |
 Moderate | 36 (67) |
 Well | 5 (9) |
Clinical T stage | |
 T1 | 8 (15) |
 T2 | 19 (35) |
 T3 | 9 (17) |
 T4 | 18 (33) |
Clinical N stage | |
 Nx | 2 (4) |
 N0 | 23 (43) |
 N1 | 11 (20) |
 N2a | 0 (0) |
 N2b | 14 (26) |
 N2c | 4 (7) |
Pathological T stage | |
 ypT0 | 2 (4) |
 T1 | 8 (15) |
 T2 | 20 (37) |
 T3 | 7 (13) |
 T4 | 17 (31) |
Pathological N stage | |
 No dissection | 7 (13) |
 N0 | 12 (22) |
 N1 | 12 (22) |
 N2a | 0 (0) |
 N2b | 19 (36) |
 N2c | 4 (7) |
Overall stage | |
 Stage I | 1 (2) |
 Stage II | 6 (11) |
 Stage III | 7 (13) |
 Stage IV | 40 (74) |
Primary Surgery Margin Status | |
 Negative (>5 mm) | 41 (76) |
 Close (≤ 5 mm) | 9 (17) |
 Positive | 4 (7) |
Depth of invasion | |
  ≤ 1.5 cm | 33 (61) |
  > 1.5 cm | 18 (33) |
 Unspecified | 3 (6) |
Perineural invasion | |
 Yes | 22 (41) |
 No | 32 (59) |
Lymphovascular invasion | |
 Yes | 14 (26) |
 No | 30 (56) |
 Unspecified | 10 (18) |
Extracapsular extension | |
 Yes | 17 (31) |
 No | 37 (69) |
IMRT dose and fractionation | |
 Median Dose (Range), in Gy | 60 (56–70) |
 Median Fractionation (Range) | 30 (28–33) |
Laterality of Neck radiation | |
 Unilateral | 13 (24) |
 Bilateral | 41 (76) |
Chemotherapy | Â |
 Induction | 5 (9) |
 Concurrent | 13 (24) |
 Induction and concurrent | 2 (4) |
 No chemotherapy | 32 (59) |