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Diagnosis of the tumour (n = 143)
| Preoperative diagnosis | |
| Yes | |
| Transbronchial lung biopsy | 12 (8.4%) |
| No | |
| Intraoperative diagnosis | |
| Frozen section | 113 (79.0%) |
| Needle aspiration cytology | 7 (4.9%) |
| Postoperative diagnosis | 11 (7.7%) |
| Fix on tumour location in operation | |
| Yes | |
| Hook-wire marking (with computed tomography) | 68 (47.5%) |
| Palpation | 33 (23.1%) |
| Inspection | 23 (16.1%) |
| No | 19 (13.3%) |
