Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post drainage of a pericardial effusion with a chest tube in place . Lung volumes remain low and there has been interval increase in vascular markings since prior , suggesting vascular congestion . Additionally , there has been increased retrocardiac opacification and obscuration of the left hemidiaphragm which likely represents a component of pleural fluid and atelectasis . Heart borders are difficult to identify , but the heart remains enlarged . There is no pneumothorax .
    OUTPUT:
    
Increased vascular congestion since prior . Persistent cardiomegaly .