Group 1 | Group 2 | ||
Malignant | |||
adenocarcinoma | 19 | 6 | |
squamous cell carcinoma | 5 | 1 | |
small cell carcinoma | 5 | 0 | |
malignant mesothelioma | 0 | 1 | |
metastases | 4 | 1 | |
Benign | |||
epithelioid cell granuloma | 2 | 0 | |
non-specific benign | 5 | 1 |