Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of focal consolidation , pleural effusion or pneumothorax . The heart is mildly enlarged . The mediastinal contours are normal . Aortic knob calcifications are noted .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Mild cardiomegaly .