Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low and clear . No focal consolidation , effusion , or pneumothorax is present . The hila are normal and distinct on this PA exam . Previous hilar opacity was most likely artifact . Top normal heart size is accentuated by low lung volumes .
    OUTPUT:
    
No acute cardiopulmonary process . Findings were discussed with Dr . ___ via telephone at 3 :30 p .m . on ___ .