Table 4.
Immunostaining patterns in primary and metastatic NSCLC
| NSCLC | P63 | CK5/6 | Napsin A | TTF-1 | CK7 |
|---|---|---|---|---|---|
| Positive/total | Positive/total | Positive/total | Positive/total | Positive/total | |
| (%) | (%) | (%) | (%) | (%) | |
| Primary lung carcinomas (n = 102) | |||||
| ADC (n = 72) | 5/23 | 2/9 | 23/25 | 60/71 | 45/48 |
| (21.7%) | (22.2%) | (92.0%) | (84.5%) | (93.8%) | |
| SqCC (n = 30) | 22/24 | 18/18 | 0/8 | 1/28 | 7/14 |
| (91.7%) | (100.0%) | (0.0%) | (3.6%) | (50.0%) | |
| Metastatic tumor of the lung (n = 143) | |||||
| ADC (n = 131) | 6/19 | 2/13 | 40/59 | 113/130 | 101/101 |
| (31.6%) | (15.4%) | (67.8%) | (86.9%) | (100.0%) | |
| SqCC (n = 13) | 11/11 | 6/6 | 0/3 | 1/8 | 3/4 |
| (100.0%) | (100.0%) | (0.0%) | (12.5%) | (75.0%) | |
NSCLC: non-small cell lung carcinoma. ADC: adenocarcinoma. SqCC: squamous cell carcinoma.