Ahn [1] reviewed the Highly developed diagnostic function of bronchoscopy. Flexible bronchoscopy is an important diagnostic Resource inside the scientific industry of respiratory medicine. In the last decade, endobronchial ultrasound (EBUS) has long been introduced in clinics. Convex probe-EBUS has become utilized to diagnose several central lung lesions and https://directivepublications.org/journal-of-respiratory-medicine-and-research/