Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right PICC line can be traced to the level of the low SVC . Lung volumes are low . A small left pleural effusion has slightly increased . Stable left basilar retrocardiac airspace opacification is most likely due to atelectasis . The upper lung fields are clear . There is no pneumothorax . The heart mediastinum can not be accurately assessed on this projection .
    OUTPUT:
    
Slightly increased small left pleural effusion and left basilar atelectasis .