TABLE 2 Summary of Immunohistochemistry of Thyroid Transcription Factor-1 (TTF-1) and Surfactant Protein A (SP-A) in Human Lung Tumors
From: Expression of Thyroid Transcription Factor-1 in Normal and Neoplastic Lung Tissues
Histologic Types | No. of Cases | TTF-1 Protein | SP-A | ||||||
|---|---|---|---|---|---|---|---|---|---|
− | + | ++ | Positive % | − | + | ++ | Positive % | ||
Adenocarcinoma | 52 | 2 | 12 | 38 | 96.2 | 14 | 21 | 17 | 73.1 |
Squamous cell carcinoma | 26 | 26 | 0 | 0 | 0 | 26 | 0 | 0 | 0 |
Small cell lung carcinoma | 18 | 2 | 0 | 16 | 88.9 | 18 | 0 | 0 | 0 |
Large cell carcinoma | 8 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 |
