Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . The heart is moderately enlarged . The lungs are clear bilaterally without focal consolidation , effusion , or pneumothorax . The mediastinal contour is stable with an unfolded thoracic aorta again noted . The bony structures appear intact .
    OUTPUT:
    
Moderate cardiomegaly . No signs of pneumonia or CHF .