Final diagnosis in patients undergoing thoracoscopy with adequate sampling
| Diagnosis | Frequency |
| Mesothelioma | 15 |
| Bronchogenic carcinoma | 8 |
| Metastatic carcinoma | 7 |
| Tuberculosis | 3 |
| Non-Hodgkin's lymphoma | 1 |
| Sarcomatoid carcinoma of pleura | 1 |
| Empyema | 2 |
| Inflammation | 7 |
| Fibrosis/fibrin | 3 |
| Pleural plaque | 1 |
| Normal pleura | 1 |
| No diagnosis from thoracoscopy | 5 |