Tumor characteristics
| Histology (%) | |
|---|---|
| Adenocarcinoma | 44 (22) |
| Squamous | 135 (67) |
| Other | 22 (11) |
| Median size tumor clinically (mm; IQR) | 25 (20–30) |
| Size tumor on imaging (mm; IQR) | 22 (15–28) |
| Size tumor pathology report (mm; IQR) | 15 (10–25) |
| Positive lymph nodes (%) | 18 (9) |
| Positive resection margin (%) | 2 (1) |