Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low bilateral lung volumes . Perihilar and infrahilar airspace opacities are likely more conspicuous secondary to the low inspiratory lung volumes . Small bilateral pleural effusions are present . No pneumothorax . The size of the cardiac silhouette is enlarged but unchanged . A small amount of free air is noted under the right hemidiaphragm . Air-filled loops of bowel project over the right upper quadrant as well as gaseous distention of the stomach . The the tip of the left internal jugular central venous catheter projects over the junction of the left brachiocephalic and left jugular vein , unchanged .
    OUTPUT:
    
Low bilateral lung volumes . Persisting pulmonary edema and small bilateral pleural effusions . A small amount of free air is noted under the right hemidiaphragm .