A<unk>  is an interventional procedure performed to diagnose<unk>  pathology by obtaining a small piece of<unk>  which is examined under a microscope. Beyond microscopic examination for cellular morphology and architecture, special stains and cultures can be performed on the tissue obtained.
Lung biopsy
Bronchial brushing
Bronchoscopy
Bronchoalveolar lavage
Bronchography
Bronchial challenge test
Thoracoscopy
Mediastinoscopy