Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right - sided PICC terminates at the cavoatrial junction . There has been interval removal of the NG tube . Bibasilar atelectasis is noted . There is suggestion of a retrocardiac opacification which most likely represents atelectatic changes however in the appropriate clinical settings a superimposed pneumonia can not be excluded . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . The aorta is tortuous .
    OUTPUT:
    
1 . Retrocardiac opacification most likely atelectatic changes however in the appropriate clinical setting pneumonia can not be excluded . 2 . Interval removal of the NG tube .