Bronchoscopy is a procedure that allows doctors to see inside the tube that leads to the lungs, thereby diagnosing diseases, taking samples for testing, or removing foreign objects from the bronchi that the patient accidentally inhales. During bronchoscopy, the doctor will insert a small tube into the nose or mouth, through the throat and into the lungs. This can cause discomfort for the patient, and natural reflexes such as vomiting and coughing make the procedure more difficult and dangerous.

Fluorescent bronchoscopy can detect carcinoma in situ and dysplastic lesions that are difficult to detect with white light bronchoscopy alone.

In the intensive care unit, bronchoscopy can be used to clear the airways by removing phlegm and secretions that block the bronchi. Bronchoscopy to remove phlegm plugs does not replace conventional phlegm suction techniques or daily respiratory therapy such as percussion, turning, breathing exercises, etc.

Early diagnosis is important in the timely detection and treatment of lung cancer. Among the diagnostic methods, lung cancer x-ray has high accuracy, making it easier for doctors to detect abnormal tumors in the patient's lungs.