Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right - sided ___ shunt is unchanged in position , terminating at the level of the mid SVC . Retrocardiac opacification has improved , suggesting resolving atelectasis . The lungs are otherwise clear . There is no pneumothorax . The heart and mediastinum are within normal limits despite the projection . A small left pleural effusion is stable .
    OUTPUT:
    
Resolving left lower lobe atelectasis . Stable small left pleural effusion .