Table 2.

Log-rank univariate analysis of overall and disease-free survival

VariablesOverall survival
Disease-free survival
Median, moPMedian, moP
Tumor size, mm0.0590.060
    ≤20NRNR
    >202513
Serosal invasion0.650.70
    Absent2935
    Present1525
Retroperitoneal extension0.680.38
    Absent4240
    Present2918
Portal vein involvement0.240.20
    Absent4235
    Present1510
Lymph node metastasis0.0160.006
    NegativeNRNR
    Positive1710
Resection status0.0520.12
    R04235
    R1128
UICC stage0.0430.021
    IA/IB/IIANRNR
    IIB/III/IV1713
Histologic differentiation0.0220.14
    WellNR49
    Moderate, poor2518
Lymphatic invasion0.0160.021
    0-1NR40
    2-31510
Vascular invasion0.230.030
    0-142NR
    2-31813
Perineural invasion0.0870.031
    0-1NRNR
    2-32612
Intraoperative radiation0.540.78
    Yes4625
    No2828
Adjuvant chemotherapy0.140.98
    Yes4218
    No2525
SNCG expression0.0020.001
    NegativeNRNR
    Positive1510
  • Abbreviation: NR, not reached.