Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear despite low lung volumes . The cardiomediastinal silhouette is within normal limits . There is no free intraperitoneal air . Lucency in the midline of the upper abdomen is felt to be due to patient 's protuberant abdomen with adjacent breast shadow . There is no free intraperitoneal air .
    OUTPUT:
    
No acute cardiopulmonary process . No free intraperitoneal air .