Table 1.

Clinical data summary

Korean (n = 101)
Patient characteristicsNumber of patients
Age at diagnosis, years
 Median70
 Range35–83
Sex
 Male95
 Female6
Smoking status
 Never-smoker12
 Former smoker61
 Current smoker28
Median follow-up, months45
Tumor stage
 I51
 II29
 III21
 IV0
T stage
 T127
 T258
 T315
 T41
N stage
 N062
 N124
 N215
Recurrancy31
Total LN
 Median30
 Range5–66