Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Lungs are clear . There is no focal consolidation , effusion , or pneumothorax . No evidence of pneumomediastinum . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No radiopaque foreign body is seen . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process