Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the cardiac silhouette size which appears mildly enlarged . Crowding of the bronchovascular structures is demonstrated with possible mild pulmonary vascular congestion . Patchy opacities in the lung bases likely reflect areas of atelectasis . No pleural effusion or pneumothorax is present . The mediastinal contours are unremarkable . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis and possible mild pulmonary vascular congestion .