Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The heart is moderately enlarged , but unchanged since at least ___ . Hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Moderate cardiomegaly , not significantly changed compared with prior studies . No acute cardiopulmonary process .