Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The mediastinal and hilar contours are normal . Mild enlargement of the cardiac silhouette ( especially of the left atrium ) is stable . The lungs are well expanded and clear , without consolidation , pleural effusion or pneumothorax . No pulmonary edema is seen .
    OUTPUT:
    
Mild cardiomegaly . No acute cardiopulmonary pathology .