Bronchoscopy is an outpatient technique of visualizing the inside of the airways for diagnostic and therapeutic purposes. An instrument called a bronchoscope is inserted into the airways, usually through the nose. This allows Dr. Warner to examine the patientís airways for abnormalities such as foreign bodies, bleeding, tumors, or inflammation. Specimens may be taken from inside the lungs. The construction of bronchoscope is a flexible optical fiber instrument with real-time video equipment done under moderate sedation.