| Analysis items | Breakdown | n = 13 | (%) |
| Surgical sites | Left | 9 | 62.9 |
| Upper lobe | 6 | 46.2 | |
| Lower lobe | 3 | 23.1 | |
| Right | 4 | 30.8 | |
| Upper lobe | 1 | 7.7 | |
| Middle Lobe | 1 | 7.7 | |
| Lower Lobe | 2 | 14.3 | |
| Procedures | Left upper lobectomy | 7 | 53.8 |
| Left lower lobectomy | 2 | 15.4 | |
| Right upper lobectomy | 1 | 7.7 | |
| Right middle lobectomy | 1 | 7.7 | |
| Right lower lobectomy | 2 | 15.4 | |
| Sites of bleeding | Pulmonary artery | 13 | 100 |
| Perioperative period | Intraoperative | 11 | 84.6 |
| Postoperative | 2 | 15.4 | |
| Circulation auxiliary equipment | Cardiopulmonary Bypass | 3 | 23.1 |
| Support by cardiovascular surgeon | Supported | 3 | 23.1 |
| No support | 10 | 76.9 | |
| Pneumonectomy for life-saving | 1 | 7.7 | |
| Death | 0 | 0 |