Bronchoscopy is a test to view the airways and diagnose lung disease. It may also be used during the treatment of some lung conditions.

How the test is performed
A bronchoscope is the device used to see the lungs. The scope is passed through the mouth and then into the lungs. The mouth method allows the doctor to use a larger bronchoscope. Either method requires general anesthesia. With a lung wash, once the patient is asleep, the tube will be inserted into the lungs. Then,the doctor sends saline solution through the tube. This flushes the lungs and allows the doctor to collect samples of lung cells, fluids, and other materials inside the air sacs. Sometimes, tiny forceps may be passed through the bronchoscope and used to take tissue samples (biopsies) from the lungs.

Why the test is performed
Bronchoscopyis recommended if lung disease is suspected and an inspection of the airways or a tissue sample is needed to confirm it. The test can be used to evaluate almost any disease in pulmonary medicine, including: