Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Support lines and devices are in unchanged position . Bibasilar opacities in the left retrocardiac opacity most likely represent atelectasis . Pulmonary vascular congestion has increased since the radiograph performed 2 days ago . No pleural effusion or pneumothorax is identified . The cardiac and mediastinal contours are stable .
    OUTPUT:
    
Developing pulmonary vascular congestion since 2 days prior . Otherwise , no significant changes .