Parameters Value N %
Gender M 36 59
  F 25 41
Tumor size <2 cm 9 14.8
  >2cm 52 85.2
pTNM  
pT pT1 6 9.8
  pT2 7 11.5
  pT3 48 78.7
 
pN pN0 26 42.6
  pN1 35 57.4
       
pM pM0 58 95.1
  pM1 3 4.9
 
Clinical stage IA 5 8.2
  IB 1 1.6
  IIA 19 31.1
  IIB 33 54.2
  IV 3 4.9
 
Resection margins R0 36 59
  R1 24 39.4
  R2 1 1.6
Table 1: Clinicopathological characteristic of patients.