Table 1: Tumor characteristics.

Cancer staging system (%) SCC
(58%)
NSCC
AC
  
(32%)
LCC
  
(10%)

TNM
 T1 19 (26.76%)8110
 T2 33 (46.48%)18114
 T3-T4 19 (26.76%)1513
AJCC
 IA 13 (18.31%)760
 IB 14 (19.72%)491
 IIA 16 (22.53%)1231
 IIB 8 (11.27%)602
 IIIA/IIIB 20 (28.17%)1253

AC: adenocarcinoma; LCC: large cell carcinoma; NSCC: nonsquamous cell carcinoma; SCC: squamous cell carcinoma.