One of the key methods of diagnosing respiratory pathology A bronchoscopy is a procedure allowing doctors to examine your lungs and airways. It is usually performed by a doctor who specializes in lung disease (pulmonologist) and is experienced in endoscopy. During bronchoscopy, a thin tube (bronchoscope) is inserted through the nose or mouth into the throat and then further down the airways and bronchial tree. As demonstrated in the animation - bronchoscopy also allows taking a small "slice" of tissue for biopsy.