Table 1 Immunohistochemical reactivities of small cell carcinomas and poorly differentiated squamous cell carcinomas
Negative | Low | Intermediate | High | |
|---|---|---|---|---|
Small cell carcinomas (n=28) | ||||
TTF-1 | 2 (7.1%) | — | — | 26 (92.9%) |
p63 | 28 (100%) | — | — | — |
High molecular weight keratin | 28 (100%) | — | — | — |
p16 | — | 1 (3.6%) | — | 27 (96.4%) |
Poorly differentiated squamous cell carcinomas (n=28) | ||||
TTF-1 | 27 (96.4%) | 1 (3.6%) | — | — |
p63 | — | — | — | 28 (100%) |
High molecular weight keratin | — | — | — | 28 (100%) |
p16 | 13 (46.4%) | 6 (21.4%) | 7 (25.0%) | 2 (7.1%) |
