A bronchoscopy is a test, which allows the doctor to look into your windpipe and the air tubes of your lungs.

The doctor uses a thin, flexible tube called a bronchoscope, passed through the nose or mouth and into the airways. This can help to diagnose your lung condition by allowing your doctor to:

• See your windpipe (trachea) and airways (bronchi)
• Look for abnormalities
• Take photographs
• Take a sample of lung tissue (called a biopsy)
• Take a sample of secretions