Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from 1 day prior , interval removal of endotracheal tube , Swan - Ganz catheter , mediastinal drains and chest tube . No visualized pneumothorax . Retrocardiac opacity is stable likely a combination of atelectasis and effusion . Pulmonary vascular congestion has improved . Moderate cardiomegaly .
    OUTPUT:
    
No visualized pneumothorax .