Table 1.

Demographics and other selected characteristics of the patients

Mean age (years)	58.5 (21–80)
Woman, n (%)	89 (59.4)
Tumor stage, n (%)*
Stage I	35 (23.4)
Stage II	40 (26.6)
Stage III	42 (28)
Stage IV	33 (22)
Cell differentiated, n (%)
Well	50 (33.4)
Moderately	60 (40)
Poorly	40 (26.6)
Tumor diameter (cm), n (%)
≤3.9	41 (27.3)
4.0–7.9	65 (43.3)
≥8.0	44 (29.4)
Lymphatic invasion, n (%)	113 (75.3)
Venous invasion, n (%)	37 (24.7)

^*Tumor stage was obtained according to the TNM classification criteria