Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low leading to crowding of the bronchovascular structures . Mild bibasilar atelectasis is noted . The heart is top - normal in size . Mild central vascular congestion is seen . There is no large pleural effusion , pneumothorax , or leak lobar consolidation . Partially imaged vertebral fusion hardware is noted .
    OUTPUT:
    
Low lung volumes with mild pulmonary vascular congestion .