Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An enteric catheter courses below the left hemidiaphragm and out of view . A Swan - Ganz catheter is likely positioned within the main pulmonary artery . An inferior , likely femoral approach , ECMO venous cannula terminates within the distal superior vena cava rather than right atrium . No definite arterial cannula is identified suggesting this is either ___ ___-___ ECMO technique or there is renal arterial ECMO access . Cardiomediastinal and hilar contours are not significantly changed compared to prior examination . There is stable if not slightly worsened pulmonary edema compared to ___ , not an unexpected finding . However , there is a new retrocardiac opacification which may be due to a combination of edema , atelectasis and new small left pleural effusion .
    OUTPUT:
    
Appropriately positioned Swan - Ganz catheter and enteric catheter . Venous ECMO cannula appears to be positioned in the distal superior vena cava rather than right atrium . Stable if not slightly increased pulmonary edema . New retrocardiac opacification , likely combination of atelectasis , edema and new small left pleural effusion . Please note a small hemothorax is a consideration given likely anticoagulant therapy or possibly ECMO - induced coagulopathy . ___ discussed these findings with Dr . ___ at 6 : 40 a .m . on ___ via telephone at time of interpretation .