| Symptom | Frequency | Percentage (%) |
| Dysphagia | 1 | 7.7 |
| Hemoptysia | 0 | 0 |
| Asthenia | 2 | 15.4 |
| Cough | 4 | 30.8 |
| Thoracic pain | 7 | 53.8 |
| Dyspnea | 11 | 84.6 |