Table 1. Patient and tumor characteristics.

Patient characteristics
Age (years)
Median (range)	64 (33–85)
Gender
Male	55 (71%)
Female	23 (29%)
Tumor stage
T1	0 (0%)
T2	9 (12%)
T3	47 (60%)
T4a	12 (15%)
T4b	10 (13%)
Lymph-node metastasis
N0	21 (27%)
N1	28 (36%)
N2	29 (37%)
Clinical stage
1	4 (5%)
2	18 (23%)
3	56 (72%)