Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left chest tube has been removed . There is no new large pleural effusion . There is no pneumothorax . There is a persistent left retrocardiac opacity which may be secondary to infection , pleural effusion , or atelectasis . Cardiomegaly is unchanged . The left PICC , right IJ Swan - Ganz catheter , and LVAD are unchanged in appropriate in position .
    OUTPUT:
    
Persistent left retrocardiac opacity . No evidence of large volume left pleural effusion . No pneumothorax after removal of chest tube .