Bronchoscopy is a medical procedure used to examine the airways and lungs. It involves the insertion of a thin, flexible tube called a bronchoscope through the nose or mouth, down the throat, and into the lungs. The bronchoscope is equipped with a light and camera, allowing doctors to visualize the airways and take samples if necessary. Bronchoscopy is used to diagnose conditions such as infections, tumors, airway blockages, or chronic lung diseases, and can also be used for therapeutic purposes, such as removing obstructions or treating bleeding in the airways. The procedure is typically done under local anesthesia with sedation and is minimally invasive.