| Group | Total No positive/ No tested | S100A7 expression (No positive/No tested) | ||
| I/II | III/IV | Unstaged | ||
| Squamous cell carcinomas | 33/62 | 21/38 | 12/23 | 0/1 |
| Adenocarcinomas | 0/45 | 0/26 | 0/19 | – |
| Adenosquamous carcinomas | 3/9 | 1/3 | 1/2 | 1/4 |
| Large cell carcinomas | 1/5 | 0/2 | 1/2 | 0/1 |
| Small cell carcinomas | 0/11 | – | 0/11 | – |
| Other lung cancers* | 0/13 | 0/8 | – | 0/5 |
| Normal lung | 0/21 | |||
| Benign lung diseases | 0/6 | |||
*Other lung cancers include alveolar carcinomas, mucoid adenocarcinomas, papilla adenocarinomas and carcinoid tumour of lung.