Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates relative decrease in opacification of the right mid hemithorax status post bronchoscopy . There are some persistent atelectatic changes in the right mid lung field . Left lung is clear . There is no pneumothorax or pleural effusion . The cardiomediastinal and hilar contours are unremarkable . The endotracheal tube ends 5 .6 cm from the carina and should be advanced for more secure seating .
    OUTPUT:
    
1 . Interval decreased opacification the right hemithorax status post bronchoscopy . Some persistent atelectatic changes seen in the right mid lung field . 2 . The endotracheal tube ends 5 .6 cm from the carina and should be advanced for more secure seating .