Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the right transjugular Swan - Ganz catheter projects over the proximal right main pulmonary artery however the catheter appears coiled within the right ventricle . There is a persisting retrocardiac opacity which likely reflects a combination of pleural fluid and atelectasis . New mild pulmonary edema . No pneumothorax identified . The size of the cardiac silhouette is enlarged but unchanged .
    OUTPUT:
    
The tip of the right transjugular Swan - Ganz catheter projects over the proximal right main pulmonary artery , however the catheter appears coiled within the right ventricle . Mild pulmonary edema . Retrocardiac opacity likely reflects a small pleural effusion and atelectasis .