Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Lung volumes are low . Overlying EKG leads are present . Allowing for technical limitations , the lungs appear clear without focal consolidation , effusion or pneumothorax . The cardiomediastinal silhouette appears grossly unremarkable . Imaged osseous structures are intact . No definite signs of free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic processon this limited exam . No signs of pneumoperitoneum .