Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . This accentuates the cardiac silhouette size which is likely within normal limits . There is crowding of the bronchovascular structures with mild pulmonary vascular congestion noted . The mediastinal contours are within normal limits . Streaky opacities within the lung bases bilaterally likely reflect atelectasis . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
Mild pulmonary vascular congestion . Low lung volumes with bibasilar atelectasis .