Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable chest radiograph is obtained . Low lung volumes noted though the imaged portions of the lungs appear clear without focal consolidation , effusion , or pneumothorax . No signs of CHF . Cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
No acute intrathoracic process , limited chest radiograph .