Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low with left midlung atelectasis . This results in crowding of the bronchovascular structures and apparent mild cardiomegaly . No consolidation or pneumothorax seen . No pleural effusions seen . The visualized bony structures are unremarkable in appearance .
    OUTPUT:
    
The atelectasis in the left midlung . Low lung volumes likely contribute to the findings suggestive of mild pulmonary vascular congestion .