A<unk>  can be performed percutaneously (through the skin, typically guided by a CT Scan), via bronchoscopy with ultrasound guidance, or by surgery, either open or by video-assisted thoracoscopic surgery (VATS).
Lung biopsy
Bronchial brushing
Bronchoscopy
Bronchoalveolar lavage
Bronchography
Bronchial challenge test
Thoracoscopy
Mediastinoscopy