Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Very small right pleural effusion blunts the costophrenic angle . No consolidation , pulmonary edema or pneumothorax is seen . The cardiac and mediastinal contours are normal . A 6th rib break is seen secondary to previous thoracic surgery .
    OUTPUT:
    
No acute cardiopulmonary disease .