Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . There are low lung volumes . There is obscuration of the left hemidiaphragm , which could be due to atelectasis , which may be due to atelectasis and low lung volumes . There is a subtle lucency along the expected location of the left hemidiaphragm and free intraabdominal air is not excluded . No large pleural effusion is seen , although trace left pleural effusion would be difficult to exclude . The cardiomediastinal silhouette is likely accentuated by AP , portable technique and low lung volumes . No pneumothorax is seen . No pulmonary edema seen .
    OUTPUT:
    
Low lung volumes . Subtle lucency projecting along the left hemidiaphragm , free intraabdominal air not excluded and this may represent such . The above findings were discussed with Dr . ___ by Dr . ___ ___ at 5 :57 p .m . on ___ , approximately five minutes after discovery .