Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cervical and lumbar spinal hardware is visualized . The ET tube tip is 4 .8 cm above the carina . Lung volumes are low . There is minimal pulmonary vascular redistribution but no overt pulmonary edema . There is crowding at the left base which could be due to volume loss or an early infiltrate . Volume loss is also present at the right base .
    OUTPUT:
    
Volume loss versus infiltrate left lower lobe .