Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Aorta is unfolded . Mediastinal and hilar contours are unremarkable . Lungs are clear with the exception of minimal atelectasis in the lower lobes . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary abnormality .