Until recently, bronchoscopy has involved using cameras with CT guidance to determine abnormalities along the airway and lymph nodes. How is ultrasound now being used for bronchoscopic needle biopsies? What are other novel therapeutic applications for endobronchial ultrasound-guided transbronchial needle aspiration? Dr. Andrew Haas, assistant professor of medicine in the pulmonary, allergy and critical care division at the University of Pennsylvania Medical Center, discusses the diagnostic and therapeutic uses of ultrasound-guided bronchoscopy. Dr. Lee Freedman hosts.