Table 1 Patient characteristics
Number | Total (%) | |
|---|---|---|
Age (years) | 60.5 [39–76] | |
gender | ||
men | 27 | 61.3 |
women | 17 | 38.7 |
Never smokers | 7 | 16 |
Current and former smokers | 32 | 72.7 |
unknown | 5 | |
Histology | ||
Adenocarcinoma | 41 | 93 |
Squamous cell | 3 | 7 |
Stage at diagnosis | ||
I | 6 | 13.7 |
II | 4 | 9.1 |
III | 9 | 20.4 |
IV | 25 | 56.8 |
Average time between samples (months) | ||
Synchronous | 1.2 (n = 13) | |
métachronous | 18 (n = 31) | |