Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This accentuates the size of the cardiac silhouette which is likely mildly enlarged . The mediastinal and hilar contours are otherwise relatively unchanged . There is no pulmonary vascular congestion . Bibasilar patchy opacities likely reflect atelectasis . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are present .
    OUTPUT:
    
Bibasilar patchy opacities likely reflect atelectasis in the setting of low lung volumes .