| Characteristic |
No. of patients |
| Sex |
| Male |
18 |
| Female |
2 |
| Primary site |
| Proximal |
0 |
| Distal |
20 |
| Mid |
0 |
| Throughout |
0 |
| Histology |
| Squamous cell carcinoma |
3 |
| Adenocarcinoma |
17 |
| Histologic grade |
| Well differentiated |
3 |
| Moderately differentiated |
10 |
| Poorly differentiated |
5 |
| Unknown |
2 |
| Clinical stage |
| T1 |
0 |
| T2 |
2 |
| T3 |
18 |
| T4 |
0 |
| N0 |
6 |
| N1 |
14 |
| M0 |
18 |
| M1a |
2 |
| Pathologic stage |
| ypT0 |
5 |
| ypT2 |
8 |
| ypT3 |
6 |
| ypTx |
1 |
| ypN0 |
14 |
| ypN1 |
6 |
| Pathologic response |
| Pathologic complete response |
5 |
| Microscopic residual disease |
4 |
| Gross residual disease |
11 |
|
