Pulmonary Function describes a broad range of breathing tests used to diagnose lung diseases or disorders such as asthma, bronchitis, emphysema, or chronic obstructive pulmonary disease (COPD). These tests measure how well the lungs take in and exhale air, and how efficiently they transfer oxygen into the blood.
Bronchoscopy is a procedure during which a pulmonary physician inserts a lighted endoscope into the trachea and advances it into segments of the airways. It may be used for either therapeutic or diagnostic purposes, such as to treat bronchial inflammation by clearing the airways, or to biopsy tissue in the lungs in order to make an accurate cancer diagnosis.