Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Cardiomediastinal and hilar contours are unremarkable . There is mild cardiomegaly , not significantly changed from prior . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
Mild cardiomegaly . Otherwise , unremarkable chest radiographic examination .