Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear without confluent consolidation . There is no pulmonary edema or pleural effusions . Mediastinal and hilar contours are within normal limits . There is mild - to - moderate cardiomegaly . No pneumothorax is evident .
    OUTPUT:
    
Mild - to - moderate cardiomegaly