Ahn [1] reviewed the Highly developed diagnostic job of bronchoscopy. Versatile bronchoscopy is a vital diagnostic Software inside the scientific discipline of respiratory medicine. In the last decade, endobronchial ultrasound (EBUS) has been introduced in clinics. Convex probe-EBUS has been used to diagnose lots of central lung lesions and https://directivepublications.org/journal-of-respiratory-medicine-and-research/