Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of focal consolidation , effusion , or pulmonary vascular congestion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormality . Small sliver of lucency seen just below the right hemidiaphragm is compatible with known free intraperitoneal air seen on recent CT abdomen .
    OUTPUT:
    
No acute cardiopulmonary process . Lucency below the right hemidiaphragm compatible with free intraperitoneal air seen on recent CT .