Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral images of the chest . The lungs are well expanded and clear . There is no pleural effusion or pneumothorax . No overt edema is seen . The cardiomediastinal silhouette is enlarged in size .
    OUTPUT:
    
Cardiomegaly . No acute cardiopulmonary process .