Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal to mildly enlarged . Mediastinal contours are unremarkable . No pulmonary edema is seen . There is no evidence of free air beneath the diaphragms .
    OUTPUT:
    
No evidence of free air beneath the diaphragms . Clear lungs . Borderline cardiac silhouette size .