Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lines and Tubes : Enteric tube , right PICC , pacemaker and pacer wires are unchanged in position . LVAD device , partially visualized . Lungs : Low lung volumes with unchanged dense retrocardiac opacity . Interval improvement in pulmonary edema . Pleura : Likely small left pleural effusion . No pneumothorax . Mediastinum : There is unchanged cardiomegaly and enlargement of hilar vessels . Bony thorax : No interval change .
    OUTPUT:
    
Interval improvement in pulmonary edema . Dense left retrocardiac opacity likely atelectasis with unchanged cardiomegaly .