Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits for size . The hilar and mediastinal contours are unremarkable . No focal airspace consolidation is seen to suggest pneumonia . There is no evidence of pleural effusion , pulmonary edema or pneumothorax . No free air .
    OUTPUT:
    
No evidence of free air or pneumothorax . No focal airspace consolidation to suggest pneumonia . No pulmonary edema .