Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of the nasogastric tube . The right internal jugular central line is unchanged . The degree of vascular congestion is less prominent . However , a right lower lobe opacity appears more coalescent , which could be postsurgical substantial atelectasis . However , in the appropriate clinical setting , superimposed pneumonia could be considered . There is a left - sided pleural effusion . The heart and mediastinal contours are stable and enlarged .
    OUTPUT:
    
1 . More coalescent right lower lobe opacity could be merely substantial atelectasis after surgery , but in the appropriate clinical setting , superimposed pneumonia is considered .