Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the most recent examination , both right - sided chest tubes have been repositioned . The overall volume of the previous moderate right pleural effusion has decreased and , at the base of the right hemi thorax pleural fluid has been replaced by a small volume of pneumothorax . Residual primarily right mid lung opacity is seen , which represents atelectasis . Severe cardiomegaly is chronic . The pulmonary vasculature is unremarkable .
    OUTPUT:
    
Decreased right pleural effusion following revision of right thoracostomy tubes . Persistent basal pneumothorax may reflect pleural restriction . Severe cardiomegaly is chronic .