Table 1. Expression of markers in lung tumours.
| Napsin | Sp-A | Sp-B | TTF-1 | Total | |
|---|---|---|---|---|---|
| Adenocarcinoma | 33 | 24 | 24 | 33 | 39 |
| Large cell carcinoma | 2 | 3 | 1 | 6 | 11 |
| Squamous cell carcinoma | 0 | 4 | 5 | 4 | 31 |
| Small cell carcinoma | 0 | 0 | 1 | 12 | 15 |
| Carcinoid | 0 | 0 | 0 | 3 | 6 |
| Metastatic tumoura | 1 (renal cell carcinoma) | 1 (salivary gland) | 2 (salivary gland, midline germ cell embr. carcinoma) | 0 | 16 |
| Sensitivityb (%) | 84.6 | 61.5 | 61.5 | 84.6 | |
| Specificityb (%) | 94.3 | 77.4 | 80.0 | 76.7 |
a
Brackets show the origins of metastatic tumours.
b
Sensitivity and specificity for adenocarcinoma among nonsmall cell lung cancer (adenocarcinoma, large cell carcinoma and squamous cell carcinoma).