| Total | |
| (n = 23) | |
| Mean age, yr (range) | 56.3 (45–75) |
| Gender, man | 22 (95.7%) |
| Pre-existing comorbidities | |
| Concurrent cancers | 10 (43.5%) |
| Previous cancers | 9 (39.1%) |
| Liver cirrhosis | 8 (34.8%) |
| Clinical stage | |
| cT1aN0M0 | 17 (74%) |
| cT1bN0M0 | 4 (17.4%) |
| cT1N0M0 | 2 (8.6%) |