Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low with bronchovascular crowding likely accounting for the linear lower lung opacities . There is no convincing sign of pneumonia , edema , effusion or pneumothorax . Cardiomediastinal silhouette appears stable . Previously noted lines and tubes have been removed . No free air below the right hemidiaphragm .
    OUTPUT:
    
Limited , negative .