Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval removal of the Swan - Ganz catheter and placement of a right internal jugular central venous catheter , the tip extending to the right atrium . Multiple left - sided chest tubes and mediastinal drains are present . The endotracheal and gastric tubes have been removed . The persisting retrocardiac opacity which likely reflects a combination of a pleural effusion and atelectasis . The right lung is clear . No pneumothorax identified .
    OUTPUT:
    
Monitoring and supporting medical devices as described above . Persisting retrocardiac opacity . No pneumothorax identified .