Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is enlarged . A left - sided cardiac generator pack projects leads into the right atrium and ventricle . Since ___ , the patient has been extubated and an orogastric tube removed . Bilateral upper zone opacities are improved . The hilar contours are within normal limits . There is no effusion , edema , or pneumothorax .
    OUTPUT:
    
Improved bilateral upper zone opacities . No superimposed edema .