Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of a right pigtail thoracostomy tube . A right IJ catheter , endotracheal tube , and orogastric tube are unchanged in position . There is no pneumothorax . The heart is mildly enlarged . A persistent left retrocardiac opacity likely reflects atelectasis , though underlying consolidation can not be excluded . Mild central pulmonary vascular congestion appears improved .
    OUTPUT:
    
1 . No pneumothorax . 2 . Mild cardiomegaly . 3 . Persistent left retrocardiac opacity reflecting atelectasis or consolidation .