Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pigtail catheter projects over the right upper quadrant . A metallic stent also projects over the midline , recently deployed . It is vertical in orientation and situated near the midline . The metallic stent is somewhat distal to where a new pigtail stent was placed . It is somewhat distal to the remaining revised internal - external pigtail biliary drain . Correlation with procedure related findings is recommended . The cardiac , mediastinal and hilar contours appear unchanged . There is a patchy focal opacity in the left upper lung , which is non-specific . Atelectasis , aspiration or pneumonia could be considered although atelectasis may be implied by coinciding volume loss . Small pleural effusions are difficult to exclude . There is no pneumothorax .
    OUTPUT:
    
Patchy nonspecific opacities in the left upper lung with a mild overall volume loss in the left hemithorax . Correlation with procedure findings is suggested regarding the location of the biliary stents .