Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Comparison is made to the chest radiograph from ___ . There has been interval placement of a Swan - Ganz catheter , with its tip in a relatively distal branch of the left pulmonary arterial system . An intra-aortic balloon pump a is noted , with its tip projecting over the inferior aspect of the aortic arch . There is a left - sided pacemaker with associated right atrial and right ventricular leads . Moderate bilateral pleural effusions are now layering given the patient 's supine position , complicating comparison to the prior study from ___ . There is at least mild to moderate interstitial pulmonary edema . Mild to moderate cardiomegaly is unchanged . There is no definite pneumothorax .
    OUTPUT:
    
1 . Swan - Ganz catheter ends within a branch of the left pulmonary artery . Repositioning should be considered . 2 . Borderline high positioning of the intra-aortic balloon pump . 3 . Bilateral layering moderate pleural effusions . 4 . Mild to moderate interstitial pulmonary edema .