Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are somewhat low though allowing for this , the lungs appear clear . There is no focal consolidation , large effusion or pneumothorax . The cardiomediastinal silhouette appears grossly within normal limits and unchanged . Mediastinal contour is normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process .